/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
{
 
       Person p = new Student();
p.talk();
	}
 
	 static class Person{
public void talk(){
System.out.print("I am a Person ");
}
}
 static class Student extends Person {
public void talk(){
System.out.print("I am a Student ");
}
}
}

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