JEP181

JEP181.java

import java.lang.reflect.Field;                                                                               
                                                                                                              
public class JEP181 {                                                                                           
                                                                                                              
  public static class Nest1 {                                                                                 
                                                                                                              
    private int varNest1;                                                                                     
                                                                                                              
    public void f() throws Exception {                                                                        
                                                                                                              
      final Nest2 nest2 = new Nest2();                                                                        
                                                                                                              
      // this is ok                                                                                           
      nest2.varNest2 = 2;                                                                                     
                                                                                                              
      // this is not ok                                                                                       
      final Field f2 = Nest2.class.getDeclaredField("varNest2");                                              
      f2.setInt(nest2, 2);                                                                                    
                                                                                                              
    }                                                                                                         
                                                                                                              
  }                                                                                                           
                                                                                                              
  public static class Nest2 {                                                                                 
    private int varNest2;                                                                                     
  }                                                                                                           
                                                                                                              
  public static void main(String[] args) throws Exception {                                                   
                                                                                                              
    new Nest1().f();                                                                                          
                                                                                                              
  }                                                                                                           
                                                                                                              
}