Compile java at runtime

Question

Is it possible that a java program compiles a java source file and (if there are no errors) runs the class file?
example:
We need this for scenarios:
a java program will create java code that will represent a scenario. This class will give the java code to the scenario runner, the scenario runner needs to compile the code and run it.
thanks,
frederic

Answer 1

Hi,
Is it possible that a java program compiles a java source file and (if there are no errors) runs the >>class file?Yes this can be done you will have to follow the following logic
1)Create a process which will compile the source code
2)Once the process has done the compiling and had succeed then call step 3
3)Create a process which will run the java program
For this you can use java.lang.Runtime,java.lang.Process class etc
try this way
java.lang.Process process=java.lang.Runtime().getRuntime();
process.exec("c:\\jdk1.3\\bin\\javac c:\\test.java");
Trace the Error Stream of the process,which can tell you about the status of compilation
read that and proceed,ie if error is found dont run the code otherwise :
process.exec("c:\\jdk1.3\\bin\\java test");
I have not tried this but I believe this can be helpful for you.
regards vickyk