SCJP題庫第202題

 

Given:

NumberNames nn = new NumberNames();

nn.put("one", 1);

System.out.println(nn.getNames());

Place the code into position to create a class that maps from Strings to integer values. The result of execution must be [one]. Some options may be used more than once.

Ans:



解說:

此題問建立一個字串對應到整數值的集合