Multilevel Inheritance in java with public variables and parameterized Constructor

This is a demonstration of Multi-level inheritance in java using parameterised constructor
package com.inheritance;

public class Class1 {
public int a;
public int b;
public Class1(int a, int b) {
super();
this.a = a;
this.b = b;
System.out.println("I am super class called first--->"+(a+b));
System.out.println(a+b);
}
}

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package com.inheritance;

public class Class2 extends Class1 {

public int c;

public Class2(int a, int b, int c) {

super(a, b);

this.c=c;

System.out.println("I am the second level subclass--->" +a%c);

}

}

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package com.inheritance;

public class Class3 extends Class2 {

public int d;

public Class3(int a, int b,int c, int d) {

super(a, b, c);

this.d=d;

System.out.println("I am thrid level subclass extends second level class-->"+a*b*c*d);

// TODO Auto-generated constructor stub

}

public static void main(String args[]){

Class3 class3=new Class3(1, 2, 3, 4);

}

}

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output:

I am super class called first--->3

3

I am the second level subclass--->1

I am thrid level subclass extends second level class-->24