自动化测试仪器

编写一个Java程序来获取JUnit测试用例的语句覆盖范围？

例如：

public Integer addIfXGreaterThanY(int x, int y){
   Integer z = null;

   if (x > y) {
       z  = x + y;
   }
   else {
      z = x - y;
   }

   return z;
}

输出：

Test case 1 inputs:  10, 15
output(line numbers covered):  1, 2, 5, 6
and another call will produce:
Test Case 2 inputs: 15, 10
output(line numbers covered): 1, 2, 3, 6