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我正在创建一个个人Java终端,我需要它来做一些我现在不太了解的事情。我需要的程序来听什么被输入到JTextArea中,同时还知道,该方案将始终显示如何收听JTextArea
[USERNAME]@[OPERATING SYSTEM]:~$
“ENTER”时被击中。而且我还需要程序来设置上述的部分,使其不可编辑,并允许在永久声明后设置字符输入。 如果有人能够帮助我,我的程序在下面,那么有监听器的代码,这很可能需要大量的编辑。
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
public class testGUI extends JFrame {
boolean _active = true;
String _username = System.getProperty("user.name").toLowerCase();
String _os = System.getProperty("os.name").trim().toLowerCase();
JTextArea _commandLine = new JTextArea(_username + "@" + _os + ":~$ ");
public testGUI() {
super("Java Terminal");
setSize(800,600);
setLocation(100,100);
setDefaultCloseOperation(EXIT_ON_CLOSE);
GUISetup();
setVisible(true);
}
public void GUISetup() {
add(_commandLine);
_commandLine.addActionListener(new CommandLineListener());
}
public static void main(String[] args) {
new testGUI();
}
}
监听器代码如下。
try {
while(_active) {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
System.out.print(_username + "@" + _os + ":~$ ");
String command = br.readLine();
if(command.equals("cf")) {
new commandCreateFile();
} else if(command.equals("cof")) {
new commandCompile();
} else if(command.equals("help")) {
System.out.println("Commands");
System.out.println(" cf - Creates .java files, does not compile.");
System.out.println(" ccf - Creates .java files, compiles on creation.");
System.out.println(" help - Shows help documentation.");
} else if(command.equals("exit")) {
System.out.print("Are you sure you want to exit? (Y/N) ");
String exit = br.readLine();
if(exit.equalsIgnoreCase("y")) {
System.exit(0);
}
} else if(command.isEmpty()) {
// do nothing.
} else {
System.out.println("\"" + command + "\" does not exist. Please review the \"help\" menu");
}
}
} catch(Exception ex) {
System.out.println("There was a problem: " + ex);
}
这我不明白,通过使用JTextArea的文件,我需要附加一个适当的文件吗? – 2012-03-04 05:22:17