How would I overload method in an interface?

Question

if I have this interface

public interface someInterface {
  // method 1
  public String getValue(String arg1);
  // method 2
  public String getValue(String arg1         


        

Answer 1

A solution (not very elegant) might look loke this:

public abstract class SomeClass {
   public String getValue(String arg1) {
      throw new IllegalArgumentException();
   }
   public String getValue(String arg1, String arg2) {
      throw new IllegalArgumentException();
   }
}

public class SomeClass1 extends SomeClass {
   public String getValue(String arg1) {
      // return sth
   }
}

public class SomeClass2 extends SomeClass {
   public String getValue(String arg1, String arg2) {
      // return sth
   }
}

However there's a drawback - SomeClass1 and SomeClass2 can't inherit directly other class.