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I have a scenario where I have to generate Java code when my application is running.
Can compile and run than code from my application( as a separate application).
Is it possible to compile and then use it from the same application. Cant think of any possibility
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Java source code is compiled into bytecode when we use the javac compiler. The bytecode gets saved on the disk with the file extension . class . When the program is to be run, the bytecode is converted, using the just-in-time (JIT) compiler.
However, before execution, Java source code needs to be compiled into bytecode. Bytecode is a special machine language native to the JVM. The JVM interprets and executes this code at runtime.
Open a command prompt window and go to the directory where you saved the java program. Assume it's C:\. Type 'javac MyFirstJavaProgram. java' and press enter to compile your code.
Check out Create dynamic applications with javax.tools. Second time I've referenced this today--I swear I don't work for them.
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You can use an instance of JavaCompiler:
JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
Follow the link for the an example on how to use it.
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