Question

java通过点击按钮创建了一个了一个新窗口,想通过该新窗口的按钮退出这个新框而不是整个程序,怎么做

Answer 1

JFrame.setDefaultCloseOperation(
WindowConstants.DISPOSE_ON_CLOSE);

下面是setDefaultCloseOperation的JAVADOC

public void setDefaultCloseOperation(int operation)

Sets the operation that will happen by default when the user initiates a "close" on this frame. You must specify one of the following choices:

The value is set to HIDE_ON_CLOSE by default. Changes to the value of this property cause the firing of a property change event, with property name "defaultCloseOperation".
Note: When the last displayable window within the Java virtual machine (VM) is disposed of, the VM may terminate. See AWT Threading Issues for more information.
DO_NOTHING_ON_CLOSE (defined in WindowConstants): Don't do anything; require the program to handle the operation in the windowClosing method of a registered WindowListener object.
HIDE_ON_CLOSE (defined in WindowConstants): Automatically hide the frame after invoking any registered WindowListener objects.
DISPOSE_ON_CLOSE (defined in WindowConstants): Automatically hide and dispose the frame after invoking any registered WindowListener objects.
EXIT_ON_CLOSE (defined in JFrame): Exit the application using the System exit method. Use this only in applications.

Answer 2

如果 button名叫A 新建窗口为 UI
this.A.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
dispose();
new UI();
｝
}

追问

dispose();把主窗口给隐藏了，我想的是隐藏或者关闭新窗口

追答

你这个写到你的新窗口就行。。。

你这个写到你的新窗口就行。。。

追问

试过了啊，就是隐藏的主窗口

追答

Q727998536

Answer 3

如果你不是通过线程创建的话 只能隐藏 不能关闭

追问

怎么做，dipose?

Answer 4

不明白你的意思是什么