Method overloading

Two methods with the same name but different signatures represent method overloading. Here is an example:

public class MyClass {
  public String method(int i){
    //statements
  }
  public int method(int i, String v){
    //statements
  }
}

The following is not allowed and will cause a compilation error, because return values are not a part of the method signature and cannot be used to distinguish one method from another if they have the same signature:

public class MyClass {
  public String method(int i){
    //statements
  }
  public int method(int i){ //error
    //statements
  }
}

Yet, this is allowed, because the methods have different signatures:

public String method(String v, int i){
  //statements
}
public String method(int i, String v){
  //statements
}