测试代码：

import java.io.UnsupportedEncodingException;
import java.lang.reflect.InvocationTargetException;
public class MainTest {
	public static void main(String[] args) throws ClassNotFoundException, NoSuchMethodException, InvocationTargetException, IllegalAccessException, UnsupportedEncodingException {
		String sourceCode="public class MainTest {\r\n" + 
				"	public static void main(String[] args) {\r\n" + 
				"		A a=new A();\r\n" + 
				"		System.out.println(a.a);\r\n" + 
				"	}\r\n" + 
				"}\r\n" + 
				"class A{\r\n" + 
				"	public int a=9;\r\n" + 
				"}";
		MyJavaCompiler c=new MyJavaCompiler(sourceCode);
		if(c.compiler()) {
			c.runMainMethod();
			System.out.println("编译时间（ms）："+c.getCompilerTakeTime());
			System.out.println("运行时间（ms）："+c.getRunTakeTime());
			System.out.println("运行结果输出："+c.getResult());
		}
		System.out.println("编译信息："+c.getCompilerMessage());
	}
}

编译时间（ms）：26
运行时间（ms）：1
运行结果输出：9

编译信息：