java-based four permission modifier

 

/ ** 
 * There are four permissions to the Java modifiers: 
 * public> protected> (default)> Private 
 * the same class YES YES YES YES 
 * YES YES YES NO same package 
 * buns different classes YES YES NO NO 
 different packages of non-* subclass NO NO NO YES 
 * 
 * Note: (default) is not a keyword default, but nothing to write. 
 * /