Question

code is

public class TestOverload {

    public static void print(Float f, double d) {
        System.out.println("Float,double");
    }

    public static void print(float f, double d) {
        System.out.println("float,double");
    }

    public static void print(int f, double d) {
        System.out.println("int,double");
    }
//  public static void print(int f, float d) {
//      System.out.println("int,float");
//  }

    public static void print(double d1, double d) {
        System.out.println("double,double");
    }

    public static void print(float d1, float d) {
        System.out.println("float,float");
    }

    public static void main(String[] args) {
        TestOverload.print(2, 3.0);

        TestOverload.print(2, 3.0f);//Compiler error:The method print(float, double) is ambiguous for the type TestOverload
    }
}

why it is giving error , instead it should pick print(float d1, float d)

PS:
in the above code,if i comment :

//  public static void print(int f, double d) {
//      System.out.println("int,double");
//  }

then print(float d1, float d) is called…

Answer 1

print(2, 3.0f);

Could be both print(int, float) and print(float, double) since implicit type conversions are done in the backgound. An int can be converted to a float. Javac (or the compiler) cannot know for sure which one you meant.

If you want to choose for your self you can add casts:

print((float) 2, (float) 3.0f);

(Note that the second cast (float => float) isn’t necessary.)