Compile and Run java program using another java program (Java Reflection)

CompileRun.java

import java.io.*;
import java.lang.reflect.*;
public class CompileRun
{
 public static void main(String arg[])throws Exception
 {
  System.out.println(“Helo”);
  new com.sun.tools.javac.Main().compile(new String[]

{“HelloWorld.java”});
  Class c=Class.forName(“HelloWorld”);
  Object o=c.newInstance();
  Object ar[]=new Object[]{};
  Class cl[]=new Class[]{};
  Method m=c.getDeclaredMethod(“print”,cl);
  m.invoke(o,ar);
 
 
 }
}

HelloWorld.java 

public class HelloWorld
{
 public void print()
 {
  System.out.println(“Hello World”);
 }
}

Classpath

1)  %classpath%;Q:\SDE7_Tomcat6_JDK6\Java\jdk1.6.0_24\lib\*

2) javac CompileRun.java

3) java -cp “Q:\SDE7_Tomcat6_JDK6\Java\jdk1.6.0_24\lib\*;.” CompileRun