如何使用方法重载处理使用可变参数作为输入？

解决方法

本示例显示如何重载具有可变参数作为输入的方法。

public class Main {
   static void vaTest(int ... no) {
      System.out.print("vaTest(int ...): " 
      + "Number of args: " + no.length +" Contents: ");
      for(int n : no)
      System.out.print(n + " ");
      System.out.println();
   }
   static void vaTest(boolean ... bl) {
      System.out.print("vaTest(boolean ...) " +
      "Number of args: " + bl.length + " Contents: ");
      for(boolean b : bl)
      System.out.print(b + " ");
      System.out.println();
   }
   static void vaTest(String msg, int ... no) {
      System.out.print("vaTest(String, int ...): " +
      msg +"no. of arguments: "+ no.length +" Contents: ");
      for(int  n : no)
      System.out.print(n + " ");
      System.out.println();
   }
   public static void main(String args[]){
      vaTest(1, 2, 3);
      vaTest("Testing: ", 10, 20);
      vaTest(true, false, false);
   }
}

结果

上面的代码示例将产生以下结果。

vaTest(int ...): Number of args: 3 Contents: 1 2 3 
vaTest(String, int ...): Testing: no. of arguments: 2 
Contents: 10 20 
vaTest(boolean ...) Number of args: 3 Contents: 
true false false