When you have multiple methods with same name and different signature within the same class is known as?

Answer:
statement A calls processDeposit(int)
statement B calls processDeposit(int, int)

bobsAccount.processDeposit( 200, 25 );  //statement A

public void  

 processDeposit( int amount, int serviceCharge )

Question 17:
Say that a class has the following two methods:
float chargePenalty( int amount  ) { ... }
int   chargePenalty( int penalty ) { ... }
Do these methods have unique signatures?

First things first

Is it method overriding ?

No , since to override a method you need to replicate the complete method signature as pointed out in Brian Agnew's answer and as I explain below.

Is it overloading ?

Yes , Method "add" has an overloaded implementation in Class B.

Consider the following code:

class C{
    public static void main(String args[]){
        B a = new B();
        a.add(2 , 3);
        a.add(2.0 , 3.0);
    }
}

class A {

    public int add(int a , int b) {
        System.out.print("INT ");
        return a + b;
    }
}

class B extends A {
    public double add(double a , double b) {
        System.out.print("Double ");
        return a + b;
    }
}

OUTPUT : INT Double

So , the method in Class B in your code overloads the add method that it inherits from its parent

Does it use Static Binding or Dynamic Binding ?

This is what makes me conclude that OP is confused.It is static binding because it is a overloaded function. The only way to think of dynamic binding would have been in below scenario

class C{
    public static void main(String args[]){
        A a = new B();
        a.add(2.0 , 3.0);
    }
}

class A {

    public int add(int a , int b) {
        System.out.println("A : INT");
        return a + b;
    }
}

class B extends A {
    public int add(int a , int b) {
        System.out.println("B : INT");    
        return a + b;
    }
        
    public double add(double a , double b) {
        System.out.println("Double");
        return a + b;
    }   
}

Output : B : INT

Here , the parent class A has a contract that says , "I have an add behaviour for ints" . class B inherits this add behaviour and makes it more specific and at the same time also provides a new behaviour where it can add doubles. But class A has "no knowledge of this behaviour".

So an object of class A "cannot" add doubles. To do that you need a more specific type of A object i.e. a B object.

I need to do an assignment so i was strack in this Question in java

When the same name is used for two or more methods in the same class, how does Java tell them apart?

asked Oct 12, 2016 at 7:51

8

Java can tell apart different methods by their method signature.

For example:

public void Write(String Name) {
}

and

public void Write(String Name, int number) {
}

would be two different methods in Java, and can be called like this:

Write("MineRocker"); Write("MineRocker", 1);

A more in depth answer can be found here, https://docs.oracle.com/javase/tutorial/java/javaOO/methods.html

answered Oct 12, 2016 at 8:14

When multiple methods exist within the same class with different method signatures this is?

What is it called when the same method name is used by multiple methods with different parameters?

When a class has more than one method with the same name but with different signatures it is called method overriding?

When methods have the same name and different signatures this is called?