Sample 2

public interface testt {

}

public final class Algorithm implements testt{

    public void runAlgorithm() {

        System.out.println("running the algorithm");

        try {

            // do something  here - 

            // simulate some real time-consuming operation here             

            Thread.sleep(500);

        } catch (InterruptedException e) {

            e.printStackTrace();

        }

        

    }

    @Override

    public void test() {

        // TODO Auto-generated method stub

        

    }

}

sample

public class AbstractTest{
    public static void main(String[] ignored) {
        Abstract test=new Abstract("a","b"){
         
        } ;
        test.getInstance();
    }
   
 
   
   
   
   
}

 abstract class Abstract {
    private String a;
    private String b;

    Abstract(String a, String b) {
        this.a = a;
        this.b = b;

    }

    Abstract getInstance() {
        return this;

    }

    String getString() {
        return "this is testing in java";

    }
}

Inheritance Part 2

package Inheritance;

public class GeneralClass {
Version1Program version1=new Version2Program();

private Object test;
GeneralClass(Object test){
this.test=test;


}
void GenaralMethod(){
version1.PrintCommom3();

}




}

package Inheritance;

import java.math.BigDecimal;

public class Version1Program {

private String common1;

private String common2;

private BigDecimal common3;

@SuppressWarnings({ "unused", "rawtypes" })

private Class[] test;

Version1Program() {

common1="common1default";

common2="common2default";

common3=new BigDecimal(0);

}

Version1Program(String common1,String common2, BigDecimal common3){

this.common1=common1;

this.common2=common2;

this.common3=common3;

}

Version1Program(Class<?> test){

this(new Class []{test});

}

Version1Program(Class<?> test[]){

this.test=test;

}

Version1Program(String common2)

{

this(null,common2,null);

}

Version1Program(BigDecimal common3)

{

this(null,null,common3);

}

public void PrintCommom1() {

System.out.println(common1);

}

public void PrintCommom2() {

System.out.println(common2);

}

public void PrintCommom3() {

System.out.println(common3);

}

}

package Inheritance;

import java.math.BigDecimal;

public class Version2Program extends Version1Program{

private String common11;

private String common22;

private BigDecimal common33;

@SuppressWarnings({ "unused", "rawtypes" })

private Class[] array;

Version2Program() {

common11="common11default";

common22="common22default";

common33=new BigDecimal(00);

}

Version2Program(String common1,String common2, BigDecimal common3){

super(common1,common2,common3);

this.common11=common1;

this.common22=common2;

this.common33=common3;

}

Version2Program(String common11)

{

this(common11,null,null);

}

Version2Program(BigDecimal common33)

{

this(null,null,common33);

}

Version2Program(@SuppressWarnings("rawtypes") Class[] array){

this.array=array;

}

public void PrintCommom11() {

System.out.println(common11);

}

public void PrintCommom22() {

System.out.println(common22);

}

public void PrintCommom33() {

System.out.println(common33);

}

public void PrintCommom3() {

System.out.println("I love you ............");

}

}

package Inheritance;

import java.math.BigDecimal;

import org.junit.Test;

public class Main {

@Test

public void Method1() {

GeneralClass generalclass=new GeneralClass(new Object());

generalclass.GenaralMethod();

}

}

Inheritance part 1

package InheritancePolymorphism;

public class InheritancePolymorphism {
public void Method1(){
System.out.println("supermethod");

}


}

package InheritancePolymorphism;

public class SubClass1 extends InheritancePolymorphism{

public SubClass1() {

}

public void Method1(){

System.out.println("subclass1");

}

package InheritancePolymorphism;

public class SubClass2 extends InheritancePolymorphism{

public SubClass2() {

}

public void Method1(){

System.out.println("subclass2");

}

}

package InheritancePolymorphism;

import org.junit.Test;

public class Main {

@Test

public void Method1() {

InheritancePolymorphism[] tests={new SubClass1(),new SubClass2()};

for(InheritancePolymorphism test:tests){

test.Method1();

}

}

}