麻烦添加文本到JTextArea（append或settext）(Trouble Adding text to JTextArea (append or settext))

 所以我正在制作的程序使用2个线程：一个用于GUI，一个用于完成工作。 
 
 我希望工作线程/类的更新在GUI类中的JTextArea上打印出来。 我尝试的一切似乎都没有用。 我在行后面添加了一些行来打印文本，以便在JTextArea中添加文本以确保它已经到达行，但每次控制台都有文本但GUI中的JTextArea没有发生任何变化。 
 
public static void consoleText(String consoleUpdate){
    GUI.console.append(consoleUpdate);
}
 
 我在工人阶级试过这个，但什么也没发生。 有谁知道如何解决我的问题？ 
 
 编辑： 
 
 MAIN.JAVA 
 
public class main {
public static void main(String[] args) {
    Thread t1 = new Thread(new GUI());
    t1.start();
}
 
 GUI.JAVA 
 
public class GUI extends JFrame implements Runnable{

public static JTextArea console;
private final static String newline = "\n";

public void run(){
    GUI go = new GUI();
    go.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    go.setSize(350, 340);
    go.setVisible(true);
}

public GUI(){
setLayout(new FlowLayout());
console = new JTextArea(ConsoleContents, 15, 30);
add(console);
}
 
 WORK.JAVA 
 
...{
consoleText("\nI want this text on the JText Area");
}

public static void consoleText(String consoleUpdate){
    GUI.console.append(consoleUpdate);
}

So the program I am making uses 2 threads: One for the GUI and one to do the work.
 
I want updates from the work thread/class to print out on JTextArea in GUI class. Everything I tried didn't seem to work. I added lines to print out text on the console right after lines to add text to the JTextArea to make sure it had got to the line but everytime console got text but no changes happened to JTextArea in the GUI.
 
public static void consoleText(String consoleUpdate){
    GUI.console.append(consoleUpdate);
}
 
I tried this in the work class but nothing happened. Anyone know how to fix my problem?
 
Edit:
 
MAIN.JAVA
 
public class main {
public static void main(String[] args) {
    Thread t1 = new Thread(new GUI());
    t1.start();
}
 
GUI.JAVA
 
public class GUI extends JFrame implements Runnable{

public static JTextArea console;
private final static String newline = "\n";

public void run(){
    GUI go = new GUI();
    go.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    go.setSize(350, 340);
    go.setVisible(true);
}

public GUI(){
setLayout(new FlowLayout());
console = new JTextArea(ConsoleContents, 15, 30);
add(console);
}
 
WORK.JAVA
 
...{
consoleText("\nI want this text on the JText Area");
}

public static void consoleText(String consoleUpdate){
    GUI.console.append(consoleUpdate);
}

原文：https://stackoverflow.com/questions/13053107