Associating a Label with a Component：将标签与组件关联

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When a label is associated with a component, you should call

setLabelFor() to make the association explicit and then set a

mnemonic on the label. The associated component will get the

focus when the mnemonic is activated.

JLabel label = new JLabel("Name:");

label.setDisplayedMnemonic('N');

label.setLabelFor(component);

当你想让你一个标签与组件关联时，你应该调用setLabelFor方法来显式关联，然后为这个标签设置一个助记符。

当助记符被激活时，这个被关联的组件将获得激活