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What is the difference between exe and class files?
in .exe file it contains machine understandable code. but in .class file it contain only byte code which is not understadable by the microprocessor it will understud by the jvm only . we con't execute .class file without jvm . but we can execute .exe file without c-compiler .
Extension file for Java?
Java source files have the .java extension, compiled Java class files have the .class extension.
What does java generate after compiling the java source code?
Java compiles to Java byte code; the native language of the Java virtual machine (JVM). The JVM is essentially just an interpreter for Java byte code. Each supported platform has its own JVM implementation so the same Java byte code can be executed upon any platform without further compilation, unlike C++ where source code must be compiled separately for each supported platform. However, interpretation results in slower execution speed and higher resource consumption than with C++ which compiles to native machine code.
Why java has compiler and interpreter both?
Java is both compiled and interpreted language.First Java source code has to be translated into Byte code, which is done with the help of a compiler.But these byte codes are not machine instructions. Therefore ,in second stage this byte code has to be translated into machine code.This task is performed by an Interpreter.Hence, Java use both compiler and interpreter.
Is java fully platform independent?
Java is a platform independent language.After compiling the ".java" file ,that will be converting into the ".class" file,which is a byte code having the capability run on any OS.Basing on the concept byte code java achieving the platform independent,it leads to "Write once run anywhere".
