gistfile1.java

class Foo {
	void method(Object obj) { System.out.println("Object"); }
	void method(Number obj) { System.out.println("Number"); }
	void method(Integer obj) { System.out.println("Integer"); }
	void method(char[] obj) { System.out.println("char[]"); }
}
public class Test {
    public static void main(String[] args) {
    	Foo foo = new Foo();
    	foo.method("Hello");
    }
}