quiz3_2.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 Quiz3_2 {
   public static void main( String[] args ) {
      String a = "Hello ";
      String b = "World!";
      f( a, b );
      System.out.println( a );
   }
   public static void f( String x, String y ) {
      x += y;         
   }
}