Hi,

Difference between overloading and overriding in java is a repeatedly asked and very important interview question. So, you can find the details over here.

1. Method overloading in JAVA is used to increase readability of program while method overriding is used to provide specific implementation of a method already defined in super class.
2. Overloading is done within a class but method overriding is used within two classes in which inheritance is implemented.
3. Method overloading is an example of compile time polymorphism while overriding is an example of run time polymorphism.
4. Parameter differs in overloading while parameter's and its type always remains same in overriding.

Overloading Example

    class A {  
        static int add(int a, int b) {
             return a+b;
        }  
        static int add(int a, int b, int c) {
            return a+b+c;
        }  
    }  

Overriding Example

    class A {  
         void myFunction(){
              System.out.println("parent function...");
         }  
    }  
    class B extends A {  
         void myFunction() {
              System.out.println("child function...");
         }  
    }