The source code written inside java file are converted into byte code (class file) using by a command javac.the javac command is available in the bin folder where java is installed.Īfter compilation the class file are generated in the default location where source code is available. Java c compilation= Javac javafilename.java The JVM understands only byte code hence where ever JVM is available class files can be executed. The class files (.class) are automatically generated by the java a compiler. The byte codes are saved in a file with extension. The java compiler converts the source code into an executable format known as the byte code. Source code(.java file) is fed to java compiler. The programs written in java has to be saved in a file with the extension. Java Virtual Machine interprets the byte code into the machine code ‘.class’ file consists of Java byte codes which are understandable by JVM. Intel 8085,8086,8088 – these are micro precessors, Ex Mov a,bĪs we all aware when we compile a Java file, output is not an ‘exe’ but it’s a ‘.class’ file. Machine languages are the only languages understood by computers. The term programming language usually refers to high-level languagesĢ) The language which human can understand
Jdeveloper, Netbeans, Eclipse, intelliJ idea (Open CMD prompt – Type “java -version” then press Enter key.)ī) IDE (integrated development environment) Open java bin folder in the installed path, copy the path then go to my computer-right click system properties-advanced system settings-environment variables-select path in system variables and click on edit then put semicolon( ) and paste it.then check the same. Reason: java is not installed or path is not setĮnvironment variable PATH should be set to point to where the java binaries have been installed. Java can’t be recognized as internal or external command. Open CMD prompt – Type “ java -version” then press Enter key.
How to check if Java is available in your system? User can modify the coding with the rules mentioned in license.ġ) Java Developer Kit contains tools needed to develop the Java programsĢ) Tools-JVM(Java Virtual Machine), JRE(Java Runtime Environment ), library files, java, javac, bin(binary)
We just download and use it and we can’t modify the coding Java logo - The logo is coffee cup and saucer These libraries provide billions of methods and these methods help programmer to develop a well optimized and readable code.ĥ) Introduced by james gosling in sun MicrosystemsĦ) JAVA is not a acronym, it is just a wordħ) It was released on 1996 in the name of OAKĨ) The next name is green, this name also not popularġ0) in 2010 oracle bought sun Microsystems. ģ) Java is also a platform Independent language ie you can write code in one OS and can run same compiled code in another OS.Ĥ) Java supports millions library classes which you can be imported while coding. Good Luck Friends -ġ) Java is a programming language which is used for developing so many applications and programs in various industry.Ģ) it’s an Object Oriented Programming Language (oop’s).