Why it is not working

See more:

Java

system

I have been trying to set the class path programmatically using System.setProperty("java.class.path",newPath). Though I set the class path, it throws an error.

This is my code:
A.java

class A
{

public static void main(String[] args)
{
System.setProperty("java.class.path","E:\\javadem\\");
System.out.println("prop: "+System.getProperty("java.class.path"));

B obj=new B();
System.out.println("Class A from C directory");
obj.display();
}
}

B.java

class B
{
public void display()
{
System.out.println("B class!!!");
}
public static void main(String[] args)
{
System.out.println("This is class B fom E directory");
}
}

I have another class file in E: directory and I want to access it. How can i set the class path in runtime in java?

What I have tried:

I have tried setting the path in commandline. It worked. But, I want to set it via code.

Error:

A.java:18: error: cannot find symbol
B obj=new B();
^
  symbol:   class B
  location: class A