From one java file compile other java file

here is my case ...i have one xxxxxx.java file when compile and run the file i开发者_开发问答 get output as yyyyyy.java file .....but i need yyyyyy.class file i.e is from xxxxxx.java file should automatically compile it output file and get yyyyyy.class...can this be done in java

thanks

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Since Java 6, this can be done via the JavaCompiler API in javax.tools.

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Use the interface from the tools package. There are enough examples on the web, one is here: http://www.java2s.com/Code/Java/JDK-6/CompilingfromMemory.htm