import java.util.*;  

public class Hello {
   

    public static void main (String [] args) {

        String[] str1 = {
  "hello", "i", "am", "Jarry1"};
        String[] str2 = {
  "hello", "i", "am", "Jarry2"};
        String[] str3 = {
  "hello", "i", "am", "Jarry3"};
        String[] str4 = {
  "hello", "i", "am", "Jarry4"};

        Vector v1 = new Vector(str1);
        Vector v2 = new Vector(str2);
        Vector v3= new Vector(str3);
        Vector v4 = new Vector(str4);

        Vector v = new Vector();
        v.func(new Vector[] {v1, v2, v3,v4});
    }

    private static class Vector<T> {
   

        T[] obj;

        public Vector() {}
        public Vector(T[] obj) {
            this.obj=obj;
        }

        void func(Vector<?>... args) {
            for (int i=0; i< args.length; i++ ) {   
                for (int j=0; j< args[i].obj.length ; j++ ) {
                    System.out.print(args[i].obj[j] + " ");             
                }
                System.out.print("\n"); 
            }
        }       
    }

}
 
 
    
  
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输出：

hello i am Jarry1 
hello i am Jarry2 
hello i am Jarry3 
hello i am Jarry4 
 
 
    
  
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我想这个例子已经很简单了吧，其中：void func(Vector<?>... args) 等价于 void func(Vector<T>[] args)， 模板T，必须是Object类型，不能是基本数据类型。因为是在静态的main函数里去声明Vector对象，所以Vector内部类也应该是静态的（静态上下文不能引用非静态变量）


原文：http://blog.csdn.net/Ray_Chou/article/details/48206783