Indonesian islands. Country the fourth largest island
Translated by Google
No. 2
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Java (java) 1, [java] Indonesian islands. The fourth largest island. 2, a computer language java introduction I. Introduction 』『 Java from the summer of 1995 in the computer industry to suffer a high degree of attention, especially in the internet and multimedia (multimedia) related products area. Why are so so much java charm? People make such an analogy: java in the WWW (world wide web, www) position is like a spreadsheet (spreadsheet) and personal computer (pc) relationship. What are those characteristics that do java? java is a software technology Is a computer company by the U.S. sun (sun microsystems, inc.) Studied the language from The development of a computer language for the internet Is to make web pages (web page) have a lively picture of the language Is to make web pages (web page) by a static (static) into a dynamic (dynamic) language Is a language used to produce "a small application (applet (s))" Is a simplification of the c + + language is a safe language, computer viruses transferred with the function block Is a kind of security (security) as the first priority language Users do not need to spend a lot of time learning the language Client machine is a breakthrough in the structure of the language environment and the cpu Is a "write once, run on any machine you can (write oncerun anywhere)" The language is the history of the first _set_ of the application allows users (applications) through the internet from a remote server (remote server) transfer to local machine (localmachine) and perform Is an application providers need to know the user's computer hardware (such as: sun, intel, or mac, etc.) and software (such as: sw-unix, mac o / s, windows, or nt, etc.) the language of the environment ( kestenbaum, 1995). java version j2se java standard edition (java2 standard edition) positioning the client, the main programming for desktop applications j2me (java2 micro edition) is mainly used in embedded systems development, such as mobile phones and pda's programming; j2ee Enterprise Edition (java2 enterprise edition) java2 defined in the Enterprise Edition server, mainly for the development of distributed web applications, such as e-commerce sites and the erp system. The following description of the order of java, above all the history and development of java java language description, followed by a java applet and hotjava simple introduction. Second, java faq The following question and answer approach to explain the background to its history of development of java (the following order from the java faq list and tutorial, and the java language: a white paper, the reader Ruoyu-depth understanding of your own see the original): when to start the development of java? (When) The earliest probably dates back to April 1991, sun's green initiatives (green project) started on the development of consumer electronic products (consumer electronics), the language is c, c + +, and oak (for the java language, the predecessor), Later, because the language itself and the market, making the development of consumer electronics products did not meet the desired objectives, coupled with the rise of the network, Green plans to change the direction of development therefore, this is a 1994. Why call it java? (Why) "java" is the United States computer companies sun java development team through numerous options that was only after intense discussion. Vivid (liveliness), animation (animation), velocity (speed), interactive (interactivity) for the initial _select_ion of names Suoyu expressed characteristics. "Java" is a stand out in the numerous proposals, but "java" is not the first by a few words composed of characters, but from many programmers favorite hot, fragrant coffee, inspiration generated. Who developed the java? (Who) java computer company in the United States sun java development team developed the early members of the (green engineering) is patrick naughton, james gosling, & mike sheridan, and now we are more familiar with the members of james gosling. Where the development of java? (Where) Is to ask the birthplace of java? The answer is the United States. How java can find the information? (How to) On the Web, you can connect to the sun's java www site, url is http://java.sun.com/, or http://www.javasoft.com/. Where can find almost all the java you need information, but how much is a language barrier, at least for some people; does not matter, there are already many websites currently provide a Chinese java information. In Tsinghua University and Chinese Academy of Sciences of the ftp site has a lot of relevant information. Imagine the future there will be more sites should provide relevant information. How to see the effect of java? (How do i) First you need to have java interpreter with the browser (browser), for example: netscpae's netscape navigator 2.0 or above hotjava sun's browser, users of personal computers, the operating system is windows 95 or windows to be nt. java is because the writing c + + language program of the difficulty of developing open, at first, just a consumer electronics major plans in the part, c + + language, had been considered, but from the beginning of the compilation issues until the last forced to have to give up a series of questions c + + language, while the production of java language. java sun is to be a simple (simple), object-oriented (object oriented), distributed (distributed), explained (interpreted), robust (robust), safe (secure), structure of neutral (architecture neutral), portable (portable), high performance (high performance), multiple threads (multithreaded), dynamic (dynamic) programming language (Quoted thejava language: a white paper, 1995). Sun's java language in the White Paper clearly shows the java language skills. If wood is metaphor, an object-oriented wood, he (she) will do the most important focus is the wooden chair, followed by the required tools; the contrary; a non-object-oriented carpentry, he ( she) cares only for tools. The recent Plug and Play (plug and play) is also the focus of object-oriented design. Distributed (distributed): java process has a very comprehensive introduction java salary record. I. 』『 Java from the summer of 1995 in the computer industry to suffer a high degree of attention, especially in the internet and multimedia (multimedia) related products area. Why are so so much java charm? People make such an analogy: java in the WWW (world wide web, www) position is like a spreadsheet (spreadsheet) and the personal computer and ftp, etc. ttp tcp / ip protocol compatible. java applications (applications) to open the network and link with the object, just as through the urls to use a local file system links (local file system). Robust (robust): written out by the java program can perform in a variety of circumstances and with its stability. java and c / c + + java biggest difference is that there is a pointer model (pointer model) to rule out the memory to be overwritten (overwriting memory), and damage data (corrupting data) possibilities. Security (secure): java was designed for network and distributed environment, security, Zibi is a very important consideration. java class has a number of interlocking (interlocking) protection measures, can effectively prevent the intrusion of viruses and destruction behavior. Structure of neutral (architecture neutral): Generally speaking, the network is composed of many different models of combination of machines, cpu architectures and operating systems are different; Therefore, how an application can be in every machine implementation is a problem. Fortunately, java compiler to produce a structure of a neutral object file format (object file format); This makes the encoding and decoding to be performed in a variety of processors. Portable (portable): the size of the original data type is specified, for example, "float" has been said that a 32-bit ieee 754 floating point numbers, because the vast majority of cpu have this common characteristic. Library is a part of the system, which defines a number of portable programming interface, java itself has good portability. Explained (interpreted): java interpreter can be directly executed on any machine in java byte code (bytecodes), so during the program link, the time savings, this shortening the program development process, there are a great help. High performance (high performance): java byte code can be quickly converted into machine code (machine code), convert from the byte code to native code performance is almost no c and c + +, respectively. Multi-threaded (multi threaded): java language with multi-threading capabilities, which for interactive responsiveness and real-time execution behavior is helpful. Dynamic (dynamic): java than c or c + + language is more dynamic, more time to adapt to changing environments, java library will not update, but must re-compile the program. In addition, hank shiffman (making sense of java) also pin the general misconceptions of java and the notion of a description of him, especially in this summary translation is as follows: "Java is a kind of web pages written in a language, just as like the html and vrml" In fact, java does not like html language description of this class (description language), but a programming language (programming language) . Indicate the content and location description language, and programming language to describe a process to produce results. 2. "Java language easy to learn and use, unlike c, c + + and other programming languages" java is a programming language. java easy to learn? Perhaps java or c + + than c easy to learn, but still is a programming language, rather than a description language. 3. "Java code is portable, but c and c + + is not" java source code (source code) is more portable than c language that goal difference is that java code. java code to be compiled in a machine, and can run on all machines, as long as the machine that has java interpreter. 4. "Java machine can be expanded to perform in anything" In theory, java applet (java applets) can do anything, such as simulated 3d vrml model, movies, resulting in audio .... and so on. But in fact, a small application (applet) can only be executed on the page, the page can not be outside in the implementation. At the same time, java library also subject to limited functionality. 5. "Java is suited for a large-scale applications" If the java is suitable for large programs, the java is not suitable for web browser. The first commercial java applets (applix's java-based spreadsheet) is not completely use java, it only uses java as the user interface, and all the processing is the use of cgi code. 6. "Java is interpreted, basic is interpreted, so java = basic" Although the use of java interpreter does, in fact, java is c or c + + with the fully compiled language such as more similar, but with basic or apl fully interpreted language such as less similar. 7. "Java _delete_d the cgi scripts (scripts), and the program needs" java applets will replace part of the cgi purposes. In some cases, java applets to replace some server side code (server-side code), but most of the cases, for security reasons or performance considerations, java is still not completely replace the cgi scripts. 8. "Netscape's javascript is relevant java" In addition to the name outside, java and javascript is a little bit related. javascript is a scripting language, is used in the html page. java code does not appear in html, while in the html link to link through a decoding group. The relationship between java and javascript languages like c and c shell in general. 2.1 java script Is a simple java applet programming language version netscape and sun it is by the two companies established by the end of 1995, early in the navigator 2.0 is designed for dynamic web pages and design, it is part of the essence from the java applet , but does not provide such java applet class and inheritance features. java script program is a part of html file, on the label <script> and </ script> them, and the java applet is different, java script is pure literal language, but also because of this, it's function than simply to be html files to match in order to be implemented; the contrary, java script program can be made into a java applet to run. 2.2 java applet By the United States ascent Corporation (sun microcomputer system) of the r & d engineer patrick naughton and james gosling to c + + are developed, the original intention was to consumer electronics or cable TV to develop a new programming language, the current range of the internet pages design use. java applet is a c + + object-oriented programming language as the main body, to remove a few easy for programmers to instructions from the mechanism of mistakes, said the staff development java applet is a Java coffee drinks are inspired, so named it. java applet is a cross-platform programming language, which is the same code on different hardware can be a machine execution, which for applications on the Internet is very important because the internet is composed of many different types of machines made the connection, java applet program to allow users to different machines to perform, it must have a cross-platform capability. java applet programs need to go through the compiler can execute on the machine, but for cross-platform considerations, compiled java applet programs are not a direct implementation of machine code, but must be the interpreter through the java applet (generally a web browser) to perform, it is not the point Zhuyan the efficiency of program execution, but its interactive human-machine interface and dynamic data. The internet website owners are using the application is usually known as java is java applet, it is usually <applet> html file with the </ applet> tag to call, when the browser encounters <applet> tag, will be Web server to download java applet to run; it and built in java script code html files is different.
Translated by Google
岛屿名（zhǎo wā）
Indonesia Island
. The fourth largest island. (JAWA) Map of the Indonesian island of Java island, located southeast of Malaysia and Sumatra, Borneo (Kalimantan Kalimantan 〔〕) south west of Bali. Java, Republic of Indonesia only and the fourth largest island, but with more than half of the country's population, but also politically and economically at the dominant position. An area of 132,187 square kilometers (51,038 square miles, including the offshore Madura Island). Jakarta (formerly Batavia Batavia 〔〕) both In Yanbohaomiao between the Indian and Pacific Indonesia, is a 18,108 islands and islets of the "thousand island country", the island of Java Island is among the million, the fourth largest island. Java island surrounded by the sea, a tropical rain forest climate, there is no winter and summer seasons change, the annual average temperature of 25-27 degrees Celsius, rainfall. Natural conditions dense profusion of tropical plants on the island, year-round evergreen vegetation, coffee, tea, tobacco, rubber, sugar cane, coconut and other rich products. Java Island rivers, beautiful scenery, every year attracts a large number of tourists from around the world to tourism. Java island has more than 100 volcanoes, recent dramatic events, there are signs of the outbreak of the volcano Mount Merapi is one of the one. Merapi volcano 2968 meters above sea level, is the number of active volcanoes in Indonesia, the most active one. Java is Indonesia's economy, politics and culture of the most developed regions, with about 2.2 million people nationwide in the half. A number of important cities and historical sites are located on this island. Jakarta, Indonesia is Southeast Asia's largest city, located in the northern coast of West Java, the population over 830 million. Bandung in West Java more than 700 meters above sea level in the Bandung Basin, West Java provincial capital of Indonesia, where all sides surrounded by mountains, lush vegetation, beautiful environment. Yogyakarta is Indonesia's ancient capital city in central Java, the world famous Borobudur monument is located north of the city of Yogyakarta. Indonesia is located in the Pacific seismic belt, the size of the earthquake that took place thousands of times. In 2006, the island of Java has been a strong earthquake has occurred several times. May 27, Yogyakarta region and parts of Central Java province, a magnitude 5.9 earthquake occurred, causing 6,000 deaths. July 17, the Indian Ocean off the southern island of Java Richter 6.8 earthquake and tsunami, causing heavy casualties. July 19, the island of Java and Sumatra in the Sunda Strait between the recurrence of a magnitude 6.2 earthquake. The most important islands of Indonesia, the national political, economic and cultural center of Asia. Something about 970 km, 160 km north-south at its widest point, into a long and narrow shape. Area of 126,000 square kilometers, a population of about 93,130,000. Dominated by mountainous and hilly, volcanic many more than 1,800 meters above sea level there are 58 volcanic peaks, of which more than 3,000 meters with 14 seats, the highest peak Se Meilu island volcano, altitude 3676 meters, is located southeast of the island. More broad mountain basin, many basins in Indonesia, the birthplace of the ancient kingdom, is still well-developed agricultural areas and urban centers. Alluvial plains of the northern coast, and more artificial harbor; the south bank of the steep, there are hills. Earthquakes, tsunamis frequently. Hot climate, hot and rainy throughout the year in Western, Eastern has the dry season. About 1500 mm annual precipitation, less than 1000 mm in a few areas, mountain up to over 4000 mm. Many rivers, large rivers into the sea north, mainly in Chicago Lions, Chicago Manu, Thoreau, Lung Chi tower, Brandeis Tasman and other river. Island of fertile soil, good natural conditions, forest cover rate of 23%. Land reclamation rate of 70%, the highest in the country. Mineral oil, coal, manganese, iron, gold, silver, phosphorus, sulfur, iodine and so on. Rice, corn, tea, peanuts, sugar, kapok, quinine, teak and other country's total production output of 60% to 90%, still producing rubber, coffee, oil palm, coconut and cocoa. Industry has oil refining, shipbuilding, machinery, metallurgy, rubber, textiles, chemicals, paper and so on. Traffic developed, with 60% to 70% of the national road and rail mileage. Java in the administration by the West Java, Central Java, East Java and Greater Jakarta, the capital of three provinces, Yogyakarta (Yogyakarta) composed of the two SARs. SAR is a provincial administrative.
Translated by Google
A computer language
JAVA Introduction I. Introduction 』『 Java from the summer of 1995 in the computer industry to suffer a high degree of attention, especially in Internet and Multimedia (Multimedia) categories of related products. Java Why are so such a big attraction? People make such an analogy: Java in the WWW (World Wide Web, WWW) position is like a spreadsheet (Spreadsheet) and personal computer (PC) relations. What are those features that Java does? Java is a software technology Is a computer company by the U.S. SUN (Sun Microsystems, Inc.) Studied the language from The development of a computer language for the Internet Is to make web pages (Web Page) produced a lively picture of the language Is to make web pages (Web Page) from the static (Static) into a dynamic (Dynamic) language Is a language to have a "small applications (Applet (s))" Is a simplified C + + language is a safe language, computer viruses transferred with the function block Is a kind of security (Security) as the first priority language Users do not need to spend a lot of time learning the language Client machine is a breakthrough in the structure of the language environment and the CPU Is a "write once, can run on any machine (Write OnceRun Anywhere)" The language is the history of the first _set_ of applications that allow users to (Applications) through the Internet from a remote server (Remote Server) transferred to local machine (LocalMachine) and perform Is an application providers need to know the user's computer hardware (eg: Sun, Intel, or MAC, etc.) and software (such as: SW-UNIX, MAC O / S, Windows, or NT, etc.) the language of the environment ( Kestenbaum, 1995). Java version The standard version of J2SE Java (Java2 Standard Edition) positioning the client, mainly for desktop applications programming J2ME (Java2 Micro Edition) is mainly used in embedded systems development, such as mobile phones and PDA's programming; J2EE Enterprise Edition (Java2 Enterprise Edition) is defined in the server side Java2 Enterprise Edition, mainly for the development of distributed web applications, such as e-commerce sites and ERP systems. The following description of the order of Java, the first is the development of Java and Java language to introduce the history, followed by a simple Java Applet and HotJava introduction. Second, Java FAQ The following question and answer approach to explain the history of Java, with its background (the following order from the Java FAQ list and Tutorial and The Java Language: A White Paper, the reader Ruoyu-depth understanding of your own see the original): When to start the development of Java? (When) The earliest probably dates back to April 1991, Sun's Green Plan (Green Project) started on the development of consumer electronic products (Consumer Electronics), the language used is C, C + +, and Oak (for the Java language, the predecessor), Later, because the language itself and the market, making the development of consumer electronic products did not meet the desired objectives, coupled with the rise of the network, Green plans to change the direction of development therefore, this is a 1994. Why call it Java? (Why) "Java" is a U.S. computer company SUN Java development team after numerous heated discussions before being _select_ed out. Vivid (Liveliness), animation (Animation), speed (Speed), interactive (Interactivity) for the original _select_ion of names Suoyu expressed characteristics. "Java" is a stand out in the numerous recommendations, and "Java" is not the first by a few words composed of characters, but from many programmers favorite hot, fragrant coffee, inspiration generated. Who developed the Java? (Who) Java is a U.S. computer company SUN Java Development Group developed the early members of the (green engineering) is Patrick Naughton, James Gosling, & Mike Sheridan, and now we are more familiar with the members of James Gosling. Where the development of Java? (Where) Java is the birthplace of Q? The answer is the United States. How can find the Java information? (How to) On the Web, you can connect to Sun's Java WWW site, URL is http://java.sun.com/, or http://www.javasoft.com/. Where can find almost all of Java you need information, but how much is a language barrier, at least for some people; does not matter, there are already many websites currently provide a Chinese Java information. In Tsinghua University and Chinese Academy of Sciences of the FTP site has a lot of relevant information. Imagine the future there will be more sites should provide relevant information. How to see the effect of Java? (How Do I) First you need to have Java interpreter with the browser (Browser), for example: Netscpae over the company's Netscape Navigator 2.0 or Sun's HotJava browser, users of personal computers, the operating system must be Windows 95 or Windows NT. Java is that writing C + +, a program of the difficulty of Yanzhi open, at first, just a consumer electronics major plans in the part, C + + language that it had been considered, but from the beginning of the compilation issues until the last series of problems forced the abandon C + + language, while Java language generation. Sun is to Java as a simple (Simple), object-oriented (Object Oriented), distributed (Distributed), explain (Interpreted), robust (Robust), security (Secure), structure of neutral (Architecture Neutral), portable (Portable), high performance (High Performance), multi-threaded (Multithreaded), dynamic (Dynamic) programming language (Quoted TheJava Language: A White Paper, 1995). Sun's Java language in the White Paper clearly shows the Java language skills. If wood is metaphor, an object-oriented wood, he (she) will do the most important focus is the wooden chair, followed by the required tools; the contrary; a non-object-oriented carpentry, he ( she) cares only for tools. The recent Plug and Play (Plug and Play) is the focus of object-oriented design. Distributed (Distributed): Java has a very comprehensive range salary record JAVA introduced. I. 』『 Java from the summer of 1995 in the computer industry to suffer a high degree of attention, especially in Internet and Multimedia (Multimedia) categories of related products. Java Why are so such a big attraction? People make such an analogy: Java in the WWW (World Wide Web, WWW) position is like a spreadsheet (Spreadsheet) and a personal computer and FTP, TTP TCP / IP protocol compatible. Java applications (Applications) to open the network and link with the object, just as through the URLs link to use a local file system (Local File System). Robust (Robust): written out by the Java program can perform in a variety of circumstances and with its stability. Java and C / C + + The biggest difference is that Java has a pointer model (Pointer Model) to rule out the memory to be overwritten (Overwriting Memory), and damage data (Corrupting Data) possibilities. Security (Secure): Java is designed for network and distributed environment, security, Zibi is a very important consideration. Java has a number of interlocking segments (Interlocking) protection measures, can effectively prevent the intrusion of viruses and destruction behavior. Structure of neutral (Architecture Neutral): Generally speaking, the network is composed of many different models of combination of machines, CPU architectures and operating systems are different; Therefore, how an application can be in every machine implementation is a problem. Fortunately, Java compiler to produce a structure of a neutral object file format (Object File Format); This makes the encoding and decoding to be performed in a variety of processors. Portable (Portable): the size of the original data type is specified, for example, "float" has been said that a 32-bit IEEE 754 floating point numbers, because the vast majority of CPU have this common characteristic. Library is a part of the system, which defines a number of portable programming interface, Java itself has a very good portability. Interpretation (Interpreted): Java interpreter can be directly run on any Java byte code machine (Bytecodes), so during the program link, the time savings, this shortening the program development process, there are a great help. High performance (High Performance): Java byte code can be quickly converted into machine code (Machine Code), conversion from bytecode to machine code is almost the performance of C & C + + is no difference. Multithreading (Multi threaded): Java language features with multi-threaded, which for interactive responsiveness and real-time execution behavior is helpful. Dynamic (Dynamic): Java than C or C + + language is more dynamic, more time to adapt to changing environments, Java will not update the library, but must re-compile the program. In addition, Hank Shiffman (Making Sense of Java) is also pin the general misconceptions of Java and the notion of a description of him, especially in this summary translation is as follows: "Java is a Web Pages written in a language, like HTML and VRML, like" In fact, Java does not like the HTML description language of this class (Description Language), but a programming language (Programming Language) . Indicate the content and location description language, and programming language to describe a process to produce results. 2. "Java language easy to learn and use, unlike C, C + + and other programming languages" Java is a programming language. Java is easy to learn? Than C or Java may be easier to learn C + +, but still is a programming language, rather than a description language. 3. "Java code is portable, but the C and C + + is not" Java source code (Source Code) is more portable than the C-point difference is the target Java code. Java code to be compiled in a machine, and can run on all machines, as long as the machine that has Java interpreter. 4. "Java can be expanded in the machine to perform any thing" In theory, Java Applet (Java applets) can do anything, such as simulated 3D VRML models, movies, resulting in audio .... and so on. But in fact, a small application (Applet) can only be executed on the page, the page can not be outside in the implementation. At the same time, Java is subject to restricted library functionality. 5. "Java is suited for a large-scale applications" If Java is suitable for large-scale program, Java is not suitable for Web browser. The first commercial Java Applets (Applix's Java-Based Spreadsheet) is not completely use Java, it uses Java as the user interface, and all of the processing is the use of CGI code. 6. "Java is interpreted, Basic is interpreted, so Java = Basic" Although the Java interpreter does is to use, but in fact, Java is with the C or C + +, is closer to a fully compiled languages, but full interpretation of Basic or APL and other languages less similar. 7. "Java _delete_d the CGI scripts (Scripts), and the program needs" Java Applets will replace part of the CGI purposes. In some cases, Java Applets can replace a number of server-side code (Server-Side Code), but most of the cases, for security reasons or performance considerations, Java still can not completely replace the CGI Scripts. 8. "Netscape's JavaScript and Java are relevant" In addition to the name outside, Java and JavaScript is a little bit related. JavaScript is a scripting language, is used in the HTML page. Java code does not appear in the HTML, but the HTML link to link through a decoding group. The relationship between Java and JavaScript languages like C and C Shell general. 2.1 Java Script Is a simple programming language Java Applet version, it is by Netscape and Sun both companies established by the end of 1995, early in the Navigator 2.0 is designed for dynamic web pages and design, it is part of the essence from the Java Applet , but does not provide, for example Java Applet class and inheritance features. Java Script program is a part of the HTML file, on the label <script> and </ script> them, and the difference is Java Applet, Java Script is a purely literal language, but also because of this, it's function than simply to be with HTML files can be executed; the contrary, Java Script programs can be made into a Java Applet to run. 2.2 Java Applet By the United States ascent Corporation (Sun Microcomputer System) of R & D Engineer Patrick Naughton and James Gosling to C + + are developed, the original intention was to consumer electronics or cable TV to develop a new programming language, the current range of the Internet page design use. Java Applet is a C + + object-oriented programming language as the main body, to remove a few easy for programmers to instructions from the mechanism of mistakes, said the staff development Java Applet Java coffee in the drink are the inspiration, so named it. Java Applet is a cross-platform programming language, which is the same code on different hardware can be run on the machine, which for applications on the Internet is very important because the Internet is composed of many different types of machines made the connection, Java Applet allow users to program the machine to perform different, you must have a cross-platform capability. Java Applet program to go through the compiler can execute on the machine, but for cross-platform considerations, compiled Java Applet does not have a direct implementation of the program machine code, but must be through the Java Applet interpreter (generally a web browser) to perform, it is not the point Zhuyan the efficiency of program execution, but its interactive human-machine interface and dynamic data. Internet website owners in the generic term used in Java applications usually refers to the Java Applet, it is usually HTML files <applet> and </ applet> tag to call, when the browser encounters <applet> tag, will be Download Java Applet to a web server implementation; the built-in HTML files and Java Script code is different. 3. A coffee name, originating in Indonesia's Java island, the coffee produced is generally not the crown "of Indonesia," the name of the island were directly labeled, so the coffee produced in the island of Java is called Java.
Jawa Barat