quiz4_1.java

程序练习中包括书中实例程序代码和练习中要用到的代码,是压缩文件

public class Quiz4_1 {
   int x;
   public int increment() {
      return ++x;
   }
   public static void main ( String[] args ) {
      Quiz4_1 a = new Quiz4_1();
      System.out.println( a.increment() );
   }
}