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    This page is removed, please see Core Java Learning Notes eBook on Core Java Learning Notes eBook on Amazon and on Google Play.
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    User defined words: ——sometimes you may get requirements; you write your own codes which are called as user defined words or identifiers. You can use for variables, constants, class, classes etc. Identifiers are names which you can give to variable, constant, class, interfaces etc Identifiers are names defined by the programmer based on the requirement
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    Install JDK in your system After installation set the path and class path in command prompt as follows:–  set path=%path%;e:j2sdk 1.4.2bin; set class path=%class path%;c:j2sdk 1.4.2lib; j2sdk contain java compiler , interpreter ,JRE and other tools. Java program is secure and portable: — java compiler generate byte code instance of executable code(as in c/c++) this ...