Java Exercise for inheritance

public class Father {

Father(int x){
//print();
//this.print();
y=x;

}
int y;
public int identity=100;
public int x=0;
public void print(){
System.out.println("print method in Father");
System.out.println("Identity in method \"print\" in Father object "+identity);
}
}


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public class Son extends Father{
private int identity=99;
int y=7;

Son(){
//this in Father in Son
super(9);
super.print();
this.print();

}

public void print(){
System.out.println("print method in Son");

System.out.println("Identity used \"super\"in method \"print\" in Son object :> "+super.identity);

System.out.println("\nIdentity used \"this\"in method \"print\" in Son object "+this.identity);

System.out.println("\nIdentity in method \"print\" in Son object "+identity);
System.out.println("Y in son "+y);
System.out.println("Y in Father "+super.y);
//super.print();
}

}



-------------


public class In {

public static void main(String[] args) {
//Father f= new Father();
System.out.println("-----Partition-----");
Son s=new Son();
System.out.println("-----Partition-----");

Father t=(Father)s;
t.print();
//IMatrix a=new Matrix();
//a
}

}