Call me, maybe?

　　Hey, I just met you,
　　
　　and this is crazy,
　　
　　but here‘s my number
　　
　　so call me, maybe?　

 1 　　@Test
 2     public void testTel(){
 3
 4         int[]arr=new int[]{8,2,1,5,7,4,9};
 5         int[]index=new int[]{2,0,1,1,2,6,3,0,5,4,6};
 6
 7         String tel="";
 8         for(int i:index){
 9             tel+=arr[i];
10         }
11         System.out.println("My Number is:"+tel);
12     }