点一下这个类的名字，你将发现在这个对话框的右边会出现上下箭头。
Click the name of the class and you'll see that up and down arrows appear on the right side of the dialog box.
可以通过在teller类和ImproperDepositException之间添加另一个调用箭头来为else子句建模。
The else clause would be modeled by adding another call arrow between the Teller class and the ImproperDepositException.
下一次需要运行项目时，单击 Run 旁边的箭头，如图 7 所示并选择带有包??? main 方法的类名的配置。
The next time you want to run the project, click the arrow next to Run, as shown in Figure 7 and select the configuration with the name of your class containing the main method.
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