问题描述
我没有 JOptionpane 的经验，但我需要一个简单的程序来简化我的生活。
我需要帮助的代码如下：
I have no experience with JOptionpane but I need a simple program to simplify my life.The code I need help with is below:
public static void main (String[] args) {
String input = "";
input = JOptionPane.showInputDialog("Enter code");
JOptionPane.showMessageDialog(null, toStringU(toArray(input)), "RESULT",
JOptionPane.INFORMATION_MESSAGE);
}
toStringU 方法给了我一个很长的文本
toStringU method gives me a long long text
我想在没有任何编译器的情况下运行它（一个独立的应用程序，双击，放置信息并获取结果）。
I want to run it without any compiler (a standalone application, double click, put info and take results).
我无法从输出面板复制结果，我需要复制。所以要么我需要复制它和/或我想把它写成一个txt文件（第二个会很棒）。
And I cant copy the result from output panel, which I need to copy. So either I need to copy it and/or I want to write it to a txt file (second one would be great).
推荐答案
JOptionPane 允许您指定 Object 作为message参数，如果此值为组件某种，它将被添加到 JOptionPane （ String s是自动使用 JLabel 进行渲染
JOptionPane allows you to specify an Object as the message parameter, if this value is a Component of some kind, it will be added to the JOptionPane (Strings are rendered using JLabel automatically)
通过设置类似 JTextArea的内容这是不可编辑的，你可以利用它的复制功能，而你需要做更多的工作......
By setting up something like a JTextArea that is not editable, you can take advantage of its copying capabilities, with out much more work on your part...
import java.awt.EventQueue;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class TestOptionPane11 {
public static void main(String[] args) {
new TestOptionPane11();
}
public TestOptionPane11() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
}
JTextArea ta = new JTextArea(10, 10);
ta.setText("This is some really long text that is likely to run over "
+ "the viewable area and require some additional space to render "
+ "properly, but you should be able to select and copy parts or "
+ "whole sections of the text as you, but it should remain "
+ "no editable...");
ta.setWrapStyleWord(true);
ta.setLineWrap(true);
ta.setCaretPosition(0);
ta.setEditable(false);
JOptionPane.showMessageDialog(null, new JScrollPane(ta), "RESULT", JOptionPane.INFORMATION_MESSAGE);
}
});
}
}
其他副作用
另一个副作用是 JTextArea 实际上可以将其内容写入 Writer 为你...
Additional side effects
Another side effect is the fact that the JTextArea can actually write it's contents to a Writer for you...
FileWriter writer = null;
try {
writer = new FileWriter("SomeoutputFile.txt", false);
ta.write(writer);
} catch (IOException exp) {
exp.printStackTrace();
} finally {
try {
writer.close();
} catch (Exception e) {
}
}
这也允许你写一个文件......
Which allows you to write a file as well...
这篇关于JOptionPane输出文本副本的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！