Which Overloaded Method is Called in Java

Question

I have a basic inheritance situation with an overloaded method in the super class.

public class Person {
    private String name;
    private int dob;
    priva         


        

Answer 1

Call preference

class Foo {
    static void test(int arg) { System.out.println("int"); }
    static void test(float arg) { System.out.println("float"); }
    static void test(Integer arg) { System.out.println("Integer"); }
    static void test(int... arg) { System.out.println("int..."); }

    public static void main(String[] arg) {
        test(6);
    }
}

The output will be int printed on console. Now you comment the first test() method and see what is the output coming.

This is the preference hirarchey in primitive data types. Now coming to derived types declare a class FooChild like this

class FooChild extends Foo {

}

and create two new methods in Foo like

static void testChild(Foo foo) { System.out.println("Foo"); }
static void testChild(FooChild fooChild) { System.out.println("FooChild"); }

then in main method try calling testChild like this testChild(new FooChild());.