Question

class Test {
  void m1(byte b) {
    System.out.print("byte");
  }

  void m1(short s) {
     System.out.print("short");
  }

  void m1(int i) {
     System.out.print("int");
  }

  void m1(long l) {
     System.out.print("long");
  }

  public static void main(String [] args) {
    Test test = new Test();
    test.m1(2);
  }
}

The output is : int. why does jvm consider the method with int parameter?

Answer 1

Because integer literals are of type int in Java. You’ll need an explicit cast if you want to call the other ones. (Or add a L suffix if you want to call the long version.)

See the JLS Lexical Structure §3.10.1 Integer Literals for the details.