Create the classes:

package p2;
public class A {
  public long f=10;
}


package p2;
public class C extends A {
  long getF(){
    return 0;
  }
  public long test(){
    return m();
  }
  public long m(){
    return getF();
  }
}
package p1;
import p2.*;
public class B extends A {
}

	
apply the encapsulate field refactoring to f 


package p2;
public class A {
  private long f=10;

    public long getF() {
        return f;
    }

    public void setf(long f) {
        this.f = f;
    }
}


package p2;
public class C extends A {
  long getF(){
    return 0;
  }
  public long test(){
    return m();
  }
  public long m(){
    return getF();
  }
}


package p1;
import p2.*;
public class B extends A {
}



The resulting program does not compile.