Listing 1 shows example data for the user Bob.
清单1显示的是用户bob的示例数据。
As shown in figure 1, Bob can invite participants to join the meeting by using the following options.
如图1所示,Bob可以通过使用以下选项来要求其他人加入到会议中。
In this example, if the Map on line 1 does not contain the person named "Bob," a null pointer exception will result on line 5 when the person is asked for his name.
在这个例子中,如果第1行的Map不包括一个名为“bob”的人,那么在第5行询问person的名字时就会出现null指针异常。
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