从ArrayList每隔X秒更新一次JLabel<；列表>；-JAVA
我有一个简单的Java程序，它读入一个文本文件，按“”分隔（空格），显示第一个单词，等待2秒钟，显示下一个。。。等我想在春季或其他GUI中这样做 关于如何使用spring轻松更新单词，有什么建议吗？遍历我的列表并以某种方式使用setText（） 我一点运气都没有。我正在使用此方法在控制台中打印我的文字，并将JFrame添加到其中。。。在控制台中工作得很好，但会产生无限的jframe。我在网上找到了大部分从ArrayList每隔X秒更新一次JLabel<；列表>；-JAVA,java,swing,concurrency,timer,freeze,Java,Swing,Concurrency,Timer,Freeze,我有一个简单的Java程序，它读入一个文本文件，按“”分隔（空格），显示第一个单词，等待2秒钟，显示下一个。。。等我想在春季或其他GUI中这样做 关于如何使用spring轻松更新单词，有什么建议吗？遍历我的列表并以某种方式使用setText（） 我一点运气都没有。我正在使用此方法在控制台中打印我的文字，并将JFrame添加到其中。。。在控制台中工作得很好，但会产生无限的jframe。我在网上找到了大部分 private void printWords() { for (i
private void printWords() {
for (int i = 0; i < words.size(); i++) {
//How many words?
//System.out.print(words.size());
//print each word on a new line...
Word w = words.get(i);
System.out.println(w.name);
//pause between each word.
try{
Thread.sleep(500);
}
catch(InterruptedException e){
e.printStackTrace();
}
JFrame frame = new JFrame("Run Text File");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JLabel textLabel = new JLabel(w.name,SwingConstants.CENTER);
textLabel.setPreferredSize(new Dimension(300, 100));
frame.getContentPane().add(textLabel, BorderLayout.CENTER);
//Display the window. frame.setLocationRelativeTo(null);
frame.pack();
frame.setVisible(true);
}
}
到达那里。。。一旦我，或者任何人帮助我，让它工作起来，我就会发布修复。再次感谢 您在正确的轨道上，但您创建的帧在循环内部，而不是外部。下面是它应该是什么样子：
private void printWords() {
JFrame frame = new JFrame("Run Text File");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JLabel textLabel = new JLabel("", SwingConstants.CENTER);
textLabel.setPreferredSize(new Dimension(300, 100));
frame.getContentPane().add(textLabel, BorderLayout.CENTER);
//Display the window. frame.setLocationRelativeTo(null);
frame.pack();
frame.setVisible(true);
for (int i = 0; i < words.size(); i++) {
//How many words?
//System.out.print(words.size());
//print each word on a new line...
Word w = words.get(i);
System.out.println(w.name);
//pause between each word.
try{
Thread.sleep(500);
}
catch(InterruptedException e){
e.printStackTrace();
}
textLabel.setTest(w.name);
}
}
private void printWords（）{
JFrame=newjframe（“运行文本文件”）；
frame.setDefaultCloseOperation（JFrame.EXIT_ON_CLOSE）；
JLabel textlab=新的JLabel（“，SwingConstants.CENTER）；
textLabel.setPreferredSize（新尺寸（300100））；
frame.getContentPane（）.add（textLabel，BorderLayout.CENTER）；
//显示window.frame.setLocationRelativeTo（空）；
frame.pack（）；
frame.setVisible（true）；
for（int i=0；ifinal Timer timer = new Timer(500, null);
ActionListener listener = new ActionListsner() {
private Iterator<Word> it = words.iterator();
@Override
public void actionPerformed(ActionEvent e) {
if (it.hasNext()) {
label.setText(it.next().getName());
}
else {
timer.stop();
}
}
};
timer.addActionListener(listener);
timer.start();
final Timer=新定时器（500，空）；
ActionListener侦听器=新建ActionListsner（）{
私有迭代器it=words.Iterator（）；
@凌驾
已执行的公共无效操作（操作事件e）{
if（it.hasNext（））{
label.setText（it.next（）.getName（））；
}
否则{
timer.stop（）；
}
}
};
timer.addActionListener（listener）；
timer.start（）；
线程睡眠（int）Thread.sleep（int）线程睡眠（int）import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.image.BufferedImage;
import java.util.LinkedList;
import java.util.Queue;
import java.util.Random;
import javax.swing.*;
//http://stackoverflow.com/questions/7943584/update-jlabel-every-x-seconds-from-arraylistlist-java
public class ButtonsIcon extends JFrame implements Runnable {
private static final long serialVersionUID = 1L;
private Queue<Icon> iconQueue = new LinkedList<Icon>();
private JLabel label = new JLabel();
private Random random = new Random();
private JPanel buttonPanel = new JPanel();
private JPanel labelPanel = new JPanel();
private Timer backTtimer;
private Timer labelTimer;
private JLabel one = new JLabel("one");
private JLabel two = new JLabel("two");
private JLabel three = new JLabel("three");
private final String[] petStrings = {"Bird", "Cat", "Dog",
"Rabbit", "Pig", "Fish", "Horse", "Cow", "Bee", "Skunk"};
private boolean runProcess = true;
private int index = 1;
private int index1 = 1;
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
ButtonsIcon t = new ButtonsIcon();
}
});
}
public ButtonsIcon() {
iconQueue.add(UIManager.getIcon("OptionPane.errorIcon"));
iconQueue.add(UIManager.getIcon("OptionPane.informationIcon"));
iconQueue.add(UIManager.getIcon("OptionPane.warningIcon"));
iconQueue.add(UIManager.getIcon("OptionPane.questionIcon"));
one.setFont(new Font("Dialog", Font.BOLD, 24));
one.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
two.setFont(new Font("Dialog", Font.BOLD, 24));
two.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
three.setFont(new Font("Dialog", Font.BOLD, 10));
three.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
labelPanel.setLayout(new GridLayout(0, 3, 4, 4));
labelPanel.add(one);
labelPanel.add(two);
labelPanel.add(three);
//labelPanel.setBorder(new LineBorder(Color.black, 1));
labelPanel.setOpaque(false);
JButton button0 = createButton();
JButton button1 = createButton();
JButton button2 = createButton();
JButton button3 = createButton();
buttonPanel.setLayout(new GridLayout(0, 4, 4, 4));
buttonPanel.add(button0);
buttonPanel.add(button1);
buttonPanel.add(button2);
buttonPanel.add(button3);
//buttonPanel.setBorder(new LineBorder(Color.black, 1));
buttonPanel.setOpaque(false);
label.setLayout(new BorderLayout());
label.add(labelPanel, BorderLayout.NORTH);
label.add(buttonPanel, BorderLayout.SOUTH);
Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
label.setPreferredSize(new Dimension(d.width / 3, d.height / 3));
add(label, BorderLayout.CENTER);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
pack();
setVisible(true);
startBackground();
startLabel2();
new Thread(this).start();
printWords(); // generating freeze Swing GUI durring EDT
}
private JButton createButton() {
JButton button = new JButton();
button.setBorderPainted(false);
button.setBorder(null);
button.setFocusable(false);
button.setMargin(new Insets(0, 0, 0, 0));
button.setContentAreaFilled(false);
button.setIcon(nextIcon());
button.setRolloverIcon(nextIcon());
button.setPressedIcon(nextIcon());
button.setDisabledIcon(nextIcon());
nextIcon();
return button;
}
private Icon nextIcon() {
Icon icon = iconQueue.peek();
iconQueue.add(iconQueue.remove());
return icon;
}
// Update background at 4/3 Hz
private void startBackground() {
backTtimer = new javax.swing.Timer(750, updateBackground());
backTtimer.start();
backTtimer.setRepeats(true);
}
private Action updateBackground() {
return new AbstractAction("Background action") {
private static final long serialVersionUID = 1L;
@Override
public void actionPerformed(ActionEvent e) {
label.setIcon(new ImageIcon(getImage()));
}
};
}
// Update Label two at 2 Hz
private void startLabel2() {
labelTimer = new javax.swing.Timer(500, updateLabel2());
labelTimer.start();
labelTimer.setRepeats(true);
}
private Action updateLabel2() {
return new AbstractAction("Label action") {
private static final long serialVersionUID = 1L;
@Override
public void actionPerformed(ActionEvent e) {
two.setText(petStrings[index]);
index = (index + 1) % petStrings.length;
}
};
}
// Update lable one at 3 Hz
@Override
public void run() {
while (runProcess) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
one.setText(petStrings[index1]);
index1 = (index1 + 1) % petStrings.length;
}
});
try {
Thread.sleep(300);
} catch (Exception e) {
e.printStackTrace();
}
}
}
// Note: blocks EDT
private void printWords() {
for (int i = 0; i < petStrings.length; i++) {
String word = petStrings[i].toString();
System.out.println(word);
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
three.setText(word);
}
three.setText("<html> Concurency Issues in Swing<br>"
+ " never to use Thread.sleep(int) <br>"
+ " durring EDT, simple to freeze GUI </html>");
}
public BufferedImage getImage() {
int w = label.getWidth();
int h = label.getHeight();
GradientPaint gp = new GradientPaint(0f, 0f, new Color(
127 + random.nextInt(128),
127 + random.nextInt(128),
127 + random.nextInt(128)),
w, w,
new Color(random.nextInt(128), random.nextInt(128), random.nextInt(128)));
BufferedImage bi = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
Graphics2D g2d = bi.createGraphics();
g2d.setPaint(gp);
g2d.fillRect(0, 0, w, h);
g2d.setColor(Color.BLACK);
return bi;
}
}
import java.awt.*；
导入java.awt.event.ActionEvent；
导入java.awt.image.buffereImage；
导入java.util.LinkedList；
导入java.util.Queue；
导入java.util.Random；
导入javax.swing.*；
//http://stackoverflow.com/questions/7943584/update-jlabel-every-x-seconds-from-arraylistlist-java
公共类ButtonsIcon扩展JFrame实现Runnable{
私有静态最终长serialVersionUID=1L；
专用队列iconQueue=new LinkedList（）；
专用JLabel标签=新JLabel（）；
私有随机=新随机（）；
private JPanel buttonPanel=new JPanel（）；
private JPanel labelPanel=new JPanel（）；
私人定时器倒计时器；
私人定时器；
私有JLabel one=新JLabel（“one”）；
私有JLabel two=新JLabel（“two”）；
私有JLabel三=新JLabel（“三”）；
私有最终字符串[]petStrings={“鸟”、“猫”、“狗”，
“兔子”、“猪”、“鱼”、“马”、“牛”、“蜜蜂”、“臭鼬”}；
私有布尔runProcess=true；
私有int指数=1；
私有int index1=1；
公共静态void main（字符串[]args）{
SwingUtilities.invokeLater（新的Runnable（）{
@凌驾
公开募捐{
ButtonsIcon t=新ButtonsIcon（）；
}
});
}
公共按钮图标（）{
iconQueue.add（UIManager.getIcon（“OptionPane.errorIcon”）；
iconQueue.add（UIManager.getIcon（“OptionPane.informationIcon”）；
iconQueue.add（UIManager.getIcon（“OptionPane.warningIcon”）；
iconQueue.add（UIManager.getIcon（“OptionPane.questionIcon”）；
一.setFont（新字体（“Dialog”，Font.BOLD，24））；
setHorizontalAlignment（javax.swing.SwingConstants.CENTER）；
2.setFont（新字体（“Dialog”，Font.BOLD，24））；
setHorizontalAlignment（javax.swing.SwingConstants.CENTER）；
三、setFont（新字体（“Dialog”，Font.BOLD，10））；
setHorizontalAlignment（javax.swing.SwingConstants.CENTER）；
setLayout（新的GridLayout（0,3,4,4））；
标签面板。添加（一个）；
标签面板。添加（两个）；
添加标签面板（三个）；
//labelPanel.SetBeOrder（新线条边框（颜色为黑色，1））；
labelPanel.Set不透明（假）；
JButton button0=createButton（）；
JButton button1=createButton（）；
JButton button2=createButton（）；
JButton button3=createButton（）；
setLayout（新的GridLayout（0,4,4,4））；
按钮面板。添加（按钮0）；
按钮面板。添加（按钮1）；
按钮面板。添加（按钮2）；
按钮面板。添加（按钮3）；
//buttonPanel.setOrder（新行边框（颜色为黑色，1））；
buttonPanel.set不透明（假）；
label.setLayout（新的BorderLayout（））；
添加（labelPanel，BorderLayout.NORTH）；
标签。添加（按钮面板，边框布局。南）；
维度d=Toolkit.getDefaultToolkit（）.getScreenSize（）；
标签。设置首选尺寸（新尺寸（d.宽度/3，d.高度/3））；
添加（标签、边框布局、中心）；
setDefaultCloseOperation（JFrame.EXIT_ON_CLOSE）；
包装（）；
setVisible（真）；
startBackground（）；
第二语言（）；
新线程（this.start（）；
printWords（）；//在EDT期间生成冻结Swing GUI
}
私有JButton createButton（）{
JButton button=新JButton（）；
按钮。已涂漆（假）；
按钮。设置订单（空）；
按钮。设置可聚焦（假）；
按钮设置边距（新插图（0,0,0,0）
final Timer timer = new Timer(500, null);
ActionListener listener = new ActionListsner() {
private Iterator<Word> it = words.iterator();
@Override
public void actionPerformed(ActionEvent e) {
if (it.hasNext()) {
label.setText(it.next().getName());
}
else {
timer.stop();
}
}
};
timer.addActionListener(listener);
timer.start();
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.image.BufferedImage;
import java.util.LinkedList;
import java.util.Queue;
import java.util.Random;
import javax.swing.*;
//http://stackoverflow.com/questions/7943584/update-jlabel-every-x-seconds-from-arraylistlist-java
public class ButtonsIcon extends JFrame implements Runnable {
private static final long serialVersionUID = 1L;
private Queue<Icon> iconQueue = new LinkedList<Icon>();
private JLabel label = new JLabel();
private Random random = new Random();
private JPanel buttonPanel = new JPanel();
private JPanel labelPanel = new JPanel();
private Timer backTtimer;
private Timer labelTimer;
private JLabel one = new JLabel("one");
private JLabel two = new JLabel("two");
private JLabel three = new JLabel("three");
private final String[] petStrings = {"Bird", "Cat", "Dog",
"Rabbit", "Pig", "Fish", "Horse", "Cow", "Bee", "Skunk"};
private boolean runProcess = true;
private int index = 1;
private int index1 = 1;
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
ButtonsIcon t = new ButtonsIcon();
}
});
}
public ButtonsIcon() {
iconQueue.add(UIManager.getIcon("OptionPane.errorIcon"));
iconQueue.add(UIManager.getIcon("OptionPane.informationIcon"));
iconQueue.add(UIManager.getIcon("OptionPane.warningIcon"));
iconQueue.add(UIManager.getIcon("OptionPane.questionIcon"));
one.setFont(new Font("Dialog", Font.BOLD, 24));
one.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
two.setFont(new Font("Dialog", Font.BOLD, 24));
two.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
three.setFont(new Font("Dialog", Font.BOLD, 10));
three.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
labelPanel.setLayout(new GridLayout(0, 3, 4, 4));
labelPanel.add(one);
labelPanel.add(two);
labelPanel.add(three);
//labelPanel.setBorder(new LineBorder(Color.black, 1));
labelPanel.setOpaque(false);
JButton button0 = createButton();
JButton button1 = createButton();
JButton button2 = createButton();
JButton button3 = createButton();
buttonPanel.setLayout(new GridLayout(0, 4, 4, 4));
buttonPanel.add(button0);
buttonPanel.add(button1);
buttonPanel.add(button2);
buttonPanel.add(button3);
//buttonPanel.setBorder(new LineBorder(Color.black, 1));
buttonPanel.setOpaque(false);
label.setLayout(new BorderLayout());
label.add(labelPanel, BorderLayout.NORTH);
label.add(buttonPanel, BorderLayout.SOUTH);
Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
label.setPreferredSize(new Dimension(d.width / 3, d.height / 3));
add(label, BorderLayout.CENTER);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
pack();
setVisible(true);
startBackground();
startLabel2();
new Thread(this).start();
printWords(); // generating freeze Swing GUI durring EDT
}
private JButton createButton() {
JButton button = new JButton();
button.setBorderPainted(false);
button.setBorder(null);
button.setFocusable(false);
button.setMargin(new Insets(0, 0, 0, 0));
button.setContentAreaFilled(false);
button.setIcon(nextIcon());
button.setRolloverIcon(nextIcon());
button.setPressedIcon(nextIcon());
button.setDisabledIcon(nextIcon());
nextIcon();
return button;
}
private Icon nextIcon() {
Icon icon = iconQueue.peek();
iconQueue.add(iconQueue.remove());
return icon;
}
// Update background at 4/3 Hz
private void startBackground() {
backTtimer = new javax.swing.Timer(750, updateBackground());
backTtimer.start();
backTtimer.setRepeats(true);
}
private Action updateBackground() {
return new AbstractAction("Background action") {
private static final long serialVersionUID = 1L;
@Override
public void actionPerformed(ActionEvent e) {
label.setIcon(new ImageIcon(getImage()));
}
};
}
// Update Label two at 2 Hz
private void startLabel2() {
labelTimer = new javax.swing.Timer(500, updateLabel2());
labelTimer.start();
labelTimer.setRepeats(true);
}
private Action updateLabel2() {
return new AbstractAction("Label action") {
private static final long serialVersionUID = 1L;
@Override
public void actionPerformed(ActionEvent e) {
two.setText(petStrings[index]);
index = (index + 1) % petStrings.length;
}
};
}
// Update lable one at 3 Hz
@Override
public void run() {
while (runProcess) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
one.setText(petStrings[index1]);
index1 = (index1 + 1) % petStrings.length;
}
});
try {
Thread.sleep(300);
} catch (Exception e) {
e.printStackTrace();
}
}
}
// Note: blocks EDT
private void printWords() {
for (int i = 0; i < petStrings.length; i++) {
String word = petStrings[i].toString();
System.out.println(word);
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
three.setText(word);
}
three.setText("<html> Concurency Issues in Swing<br>"
+ " never to use Thread.sleep(int) <br>"
+ " durring EDT, simple to freeze GUI </html>");
}
public BufferedImage getImage() {
int w = label.getWidth();
int h = label.getHeight();
GradientPaint gp = new GradientPaint(0f, 0f, new Color(
127 + random.nextInt(128),
127 + random.nextInt(128),
127 + random.nextInt(128)),
w, w,
new Color(random.nextInt(128), random.nextInt(128), random.nextInt(128)));
BufferedImage bi = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
Graphics2D g2d = bi.createGraphics();
g2d.setPaint(gp);
g2d.fillRect(0, 0, w, h);
g2d.setColor(Color.BLACK);
return bi;
}
}
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import javax.swing.*;
class TimeThis extends JFrame {
private static final long serialVersionUID = 1L;
private ArrayList<Word> words;
private JTextField _textField; // set by timer listener
public TimeThis() throws IOException {
_textField = new JTextField(5);
_textField.setEditable(false);
_textField.setFont(new Font("sansserif", Font.PLAIN, 30));
JPanel content = new JPanel();
content.setLayout(new FlowLayout());
content.add(_textField);
this.setContentPane(content);
this.setTitle("Swing Timer");
this.pack();
this.setLocationRelativeTo(null);
this.setResizable(false);
_textField.setText("loading...");
readFile(); // read file
printWords(); // print results
}
public void readFile(){
try {
BufferedReader in = new BufferedReader(new FileReader("adameve.txt"));
words = new ArrayList<Word>();
int lineNum = 1; // we read first line in start
// delimeters of line in this example only "space"
char [] parse = {' '};
String delims = new String(parse);
String line = in.readLine();
String [] lineWords = line.split(delims);
// split the words and create word object
//System.out.println(lineWords.length);
for (int i = 0; i < lineWords.length; i++) {
Word w = new Word(lineWords[i]);
words.add(w);
}
lineNum++; // pass the next line
line = in.readLine();
in.close();
} catch (IOException e) {
}
}
private void printWords() {
final Timer timer = new Timer(100, null);
ActionListener listener = new ActionListener() {
private Iterator<Word> w = words.iterator();
@Override
public void actionPerformed(ActionEvent e) {
if (w.hasNext()) {
_textField.setText(w.next().getName());
//Prints to Console just Fine...
//System.out.println(w.next().getName());
}
else {
timer.stop();
}
}
};
timer.addActionListener(listener);
timer.start();
}
class Word{
private String name;
public Word(String name) {
this.name = name;
}
public String getName() {
return name;
}
}
public static void main(String[] args) throws IOException {
JFrame ani = new TimeThis();
ani.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
ani.setVisible(true);
}
}