Java 应用程序重新启动或重置按钮
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Java Application Restart or Reset Button
提问by MattS
I have a very simple, choose your path, Java game that I am working on in the NetBeans IDE. Basically what happens is the user will click one of the three buttons, and pre-made JLabel's which are set to ""(nothing) will be reset to whatever text I decide that label should then use. I do this by adding the code below.
我有一个非常简单的选择你的路径，我正在 NetBeans IDE 中开发的 Java 游戏。基本上发生的事情是用户将单击三个按钮之一，并且JLabel设置为""（无）的预制将被重置为我决定该标签应该使用的任何文本。我通过添加下面的代码来做到这一点。
private void option1ActionPerformed(java.awt.event.ActionEvent evt) {
jLabel6.setText("You go down the dark tunnel...");
}
Now all this works fine but I'd like a way to restart/reset my application by clicking a button labelled "restart". I don't mind if it has to close the application and then open it again or if it will simply reset all the JLabel's back to "". I just don't want to have to type out the code below for every single JLabel.
现在所有这些工作正常，但我想要一种通过单击标记为“重新启动”的按钮来重新启动/重置我的应用程序的方法。我不介意它是否必须关闭应用程序然后再次打开它，或者它是否只是将所有 JLabel 重置为“”。我只是不想为每个 JLabel 输入下面的代码。
jLabel1.setText("");
jLabel2.setText("");
jLabel3.setText("");
I have done some research on this site and none of the code that people provide seems to work for my situation, either because it simply doesn't work or because I am doing something wrong. Any help would be greatly appreciated and please try and be specific because I am fairly new to writing Java and don't understand everything.
我在这个网站上做了一些研究，人们提供的代码似乎都不适用于我的情况，要么是因为它根本不起作用，要么是因为我做错了什么。任何帮助将不胜感激，请尝试具体说明，因为我对编写 Java 还很陌生并且不了解所有内容。
It would also work for me if someone could provide a way for me to close 1 window in an application instead of the whole thing, like when
如果有人可以为我提供一种方法来关闭应用程序中的 1 个窗口而不是整个窗口，那么它也对我有用，例如
System.exit(0);
is used.
用来。
采纳答案by MattS
Found the answer to my own question:
找到了我自己问题的答案：
Thanks to Holger for suggesting "dispose". This is what I found worked.
感谢 Holger 建议“处理”。这就是我发现的工作。
private void restartButtonActionPerformed(ActionEvent evt) {
if(evt.getSource() == restartButton)
{
dispose();
MyGUI game = new MyGUI();
game.setVisible(true);
}
}
回答by jangler
First, I recommend importing the JLabel class specifically so you can write JLabelinstead of javax.swing.JLabel:
首先，我建议专门导入 JLabel 类，以便您可以编写JLabel而不是javax.swing.JLabel：
import javax.swing.JLabel;
Instead of declaring each JLabel individually, create an Array of JLabels:
不是单独声明每个 JLabel，而是创建一个 JLabel 数组：
JLabel[] jLabels = new JLabel[N]; // where N is the number of JLabels
Whenever you need to access a JLabel, use:
每当您需要访问 JLabel 时，请使用：
jLabels[6].setText("You go down the dark tunnel...");
When you want to reset all the JLabels, use:
当您想重置所有 JLabels 时，请使用：
for (JLabel jLabel : jLabels) {
jLabel.setText("");
}
For more details on Arrays, read http://docs.oracle.com/javase/tutorial/java/nutsandbolts/arrays.html
有关数组的更多详细信息，请阅读http://docs.oracle.com/javase/tutorial/java/nutsandbolts/arrays.html
回答by Thusitha Thilina Dayaratne
If you are having your program as a executable jar file then you can use
如果你的程序是一个可执行的 jar 文件，那么你可以使用
public void restert(){
Runtime.getRuntime().exec("java -jar yourapp.jar");
System.exit(0);
}
If you want to know more about restarting java application you can go through this
如果您想了解有关重新启动 Java 应用程序的更多信息，可以通过此
