DifferentType-SameObj

package package1;

public class Class1 {

public String abc() {
System.out.println("Abc Method from Class1");
return "ABCname";
}
}

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package package1;

public class Class2 extends Class1 {

public String xyz() {

System.out.println("xyz method from Class2");

return "xyzNAME";

}

// this abc() method should be commented in first cases

public String abc() {

System.out.println("second abc method from class2");

return "abcFromClass2also";

}

}

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package package1;

public class main extends Class2 {

// CHANGE DATATYPE

// Create an object using another OBJECT TYPE     Ex:  ClassA() objB = new ClassB();

// We can use the type of SuperClass to make the object of the sub class Example: above line

// Case 1:

// Suppose three calsses ClassA ClassB ClassC and 

// B extends A and nnnnnnn C extends B

// In A create methodClassA and create methodClassB in classB

// Now make Ex:  ClassA() objB = new ClassB(); in classC main method and try to fetch the method !!

// We can only fetch method from classA not from ClassB 

// so the output will be print only from the methodClassA of ClassA

// Case 2:

// Suppose three calsses ClassA ClassB ClassC and 

// B extends A and nnnnnnn C extends B

// In A create methodClassA and create methodClassB and methodClassA in classB

// Now make Ex:  ClassA() objB = new ClassB(); in classC main method and try to fetch the method !!

// We can now fetch method from classB not from ClassA

// so the output will be print only from the methodClassB of ClassB

public static void main(String[] args) {

Class2 clas2 = new Class2();

// Print the return syso result as well as return string

System.out.println("---------------------------------------------");

System.out.println(clas2.xyz());

System.out.println("---------------------------------------------");

System.out.println("\n--------------------no another abc() method-------------------------");

// Suppose in this case there is no another abc() method in the Class2 ,

// then the output will show from the abc() method from the class 1

Class1 c2obj = new Class2();

c2obj.abc();

System.out.println("\n-----------------another abc() method i class2 also---------------------");

// Suppose in this case there is an another abc() method in the Class2 ,

// then the output will first check abc() method from class2 

// show from the abc() method body from the class 2 as a result

c2obj = new Class2();

c2obj.abc();

}

}

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