private void setupIO(InputStream stdin, InputStream stderr) {
		cmdOut = new IOThread(stdin); // 
		cmdErr = new IOThread(stderr);
		cmdOut.start();
		cmdErr.start();
	}
Compile a java file; deletes the java file and the class file when the
junit exits.
Ghidra/Features/Base/src/test/java/ghidra/test/JavaCompiler.java