Till Inheritence

Author: rtomar

Lecture Example BAO 2019/src/com/rt/covariant/A.java

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+
+package com.rt.covariant;
+
+public class A {
+	
+	int a,b;
+	 
+	public A myfun(int a,int b){
+		System.out.println("Original method"+a+" "+b);
+		return new A();
+		
+	}
+	
+
+}

Lecture Example BAO 2019/src/com/rt/covariant/ABCmain.java

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+
+package com.rt.covariant;
+
+public class ABCmain {
+
+	/**
+	 * @param args
+	 */
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+		A ob1=new A();
+		B ob2=new B();
+		C ob3=new C();
+		
+		System.out.println(	ob1.myfun(2, 3));
+		System.out.println(ob2.myfun(2, 3));
+		System.out.println(ob3.myfun(2, 3));
+
+	}
+
+}

Lecture Example BAO 2019/src/com/rt/covariant/B.java

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+
+
+package com.rt.covariant;
+
+public class B extends A {
+
+	@Override
+	public C myfun(int a, int b) {
+		// TODO Auto-generated method stub
+		System.out.println("my implementation B"+a+" "+b);
+		return new C();
+
+	}
+
+}

Lecture Example BAO 2019/src/com/rt/covariant/C.java

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+
+
+package com.rt.covariant;
+
+public class C extends B {
+
+
+
+	@Override
+	public C myfun(int a, int b) {
+		// TODO Auto-generated method stub
+		System.out.println("my implementation C"+a+" "+b);
+		return new C();
+	}
+
+}

Lecture Example BAO 2019/src/com/rt/inheritence/A.java

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+package com.rt.inheritence;
+
+public  class A {
+
+	public A() {
+		// TODO Auto-generated constructor stub
+		System.out.println("Object of A created thru Constructor of A");
+	}
+
+	int a=10;
+
+	public  void fun3()
+	{
+		System.out.println("I am fun3 from A");
+
+	}
+	
+	public static void fun1()
+	{
+		System.out.println("I am from static of A");
+
+	}
+
+//	public  abstract void fun2();
+	
+	public static void TestStatic()
+	{
+		System.out.println("i am Teststatic of A");
+	}
+
+}

Lecture Example BAO 2019/src/com/rt/inheritence/B.java

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+package com.rt.inheritence;
+
+public   class B extends A {
+	int a=20;
+
+	public B() {
+		// TODO Auto-generated constructor stub
+				
+		System.out.println("Object created thru Constructor of B");
+		
+	}
+
+	public  static void fun1()
+	{
+		System.out.println("I am from static of A");
+
+	}
+	
+	public void fun3()
+	{
+		System.out.println("I am Fun 3 from B");
+
+	}
+	
+
+
+	
+	
+
+}

Lecture Example BAO 2019/src/com/rt/inheritence/SamplePrivate.java

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+package com.rt.inheritence;
+
+public class SamplePrivate {
+
+	static int count=0;
+	
+	private SamplePrivate() {
+		// TODO Auto-generated constructor stub
+	}
+
+	public static SamplePrivate fun1()
+	{if(count<3)
+	{  count++;
+		System.out.println("Hello"+count+"Object creted");
+		return new SamplePrivate();
+	}
+	else 
+		{
+		System.out.println("MAXIMIMUM LIMIT REACHED");
+		return null;
+		
+		}
+	}
+
+	static SamplePrivate obj=new SamplePrivate();
+	
+
+}

Lecture Example BAO 2019/src/com/rt/inheritence/TestClass.java

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+package com.rt.inheritence;
+
+public class TestClass {
+
+	/**
+	 * @param args
+	 */
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+
+//		A obj=new A();
+//		B obj2=new B();
+		A.fun1();
+		
+//		SamplePrivate.obj.f1();
+//		SamplePrivate obj2=new SamplePrivate();
+		
+		
+//		SamplePrivate obj1=SamplePrivate.fun1();
+//		SamplePrivate obj2=SamplePrivate.fun1();
+//		SamplePrivate obj3=SamplePrivate.fun1();
+//		SamplePrivate obj4=SamplePrivate.fun1();
+////		
+////		
+//		obj.fun2();
+//		obj2.fun2();
+//		A.fun1();
+//		B.fun1();
+//		A.TestStatic();
+//		B.TestStatic();
+////		
+		
+//		SamplePrivate.obj.fun1();
+//		SamplePrivate obj2=
+		
+		
+		
+	}
+
+}