68 What is Co-Variant return type in Java?

Code 1 : class A { A m1() { return new A(); } } class B extends A { /* Valid A m1() { return new A(); } */ ...

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72 How to Create Sub packages in Java?

Code: package com.atharva; public class Demo { public static void main( String args[] ) { System.out.println(" Sub Pac...

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71 How to Create Program on Package in Current Location?

Code : package codingatharva; public class PackageDemo { public static void main( String args[] ) { System.out.println("...

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70 Run time Polymorphism | Dynamic Binding | Late/Lazy Binding

Code : class A { void m1() { System.out.println("  super class m1() "); } } class B extends A { void m1() ...

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69 Compile time polymorphism | Static polymorphism | Early Binding in Java

Code: class Test { static void m1() { System.out.println("  super class Test m1() "); } } class Demo extends Tes...

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67 Method Overriding Rules for Exception in Java

Code: import java.io.*; class A { void m1() throws IOException { } } class B extends A { /* We Can write Same Class Ex...

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66 Method Overriding in Java

Overriding toString() method. Code: package com.ca.atharva; class Student { int sid = 101; String sname = "ram"; ...

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65 Program on Abstract Class, Interface and their Relations in Java ?

Code: interface I { public abstract void m1(); public abstract void m2(); } /* Relation: Interface to Interface */ interface J...

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