NetBeans IDE 7.0.1 (Build 201107282000)

Steps to reproduce: apply Change Method Parameter refactoring on the following program:

public class A {
  public long k(int a) {
    return 1;
  }
  public long test() {
    return new B().k(2);
  }
}
public class B extends A {
  protected long k(long a) {
    return 2;
  }
}

Change Method Parameter refactoring introduces a behavioral change. In the previous program, the method test yields 1. In the following program, the method test yields 2.

public class A {
  private long k(int a) {
    return 1;
  }
  public long test() {
    return new B().k(2);
  }
}
public class B extends A {
  protected long k(long a) {
    return 2;
  }
}