What is a method signature in Java? -Learn Java

What is a method signature in Java? -Learn Java

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In java, method signature consists of name of the method followed by argument types.

Example:

in java return type is not part of the method signature .Compiler will use method signature 

while resolving method calls.

   class Demo

  {

      public void m1(double d){ }

      public void m2(int i)    { }

      public static void main(String args[]){

         Demo d=new Demo();

         d.m1(11.2);

         d.m2(10);

         d.m3();  //CE

    }

  }

CE:cannot find symbol

symbol:method m3(double)

location:class Demo

Within  the same class we cant't take 2 method with the same signature otherwise we will 

get compile time error.

Example:

   public void methodOne() { }

   public int methodOne() { 

    

     return 10;

   }

Output:

Compile time error

methodOne() is already defined in Demo.

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