55问答网
所有问题
当前搜索:
invokelater
swing 里怎么把tab放大一点
答:
import java.awt.EventQueue;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JPanel;import javax.swing.JTabbedPane;public class TestApp { private JFrame frame;/ Launch the application./ public static void main(String[] args) { EventQueue.
invokeLater
(new Runnable()...
java编程,一个文本框录入内容保存后自动清除,如何设置?
答:
import java.awt.*;import java.awt.event.*;import javax.swing.*;public class Example { public static void main(String[] args) { EventQueue.
invokeLater
(() -> { final JFrame frame = new JFrame("Example");final JTextField jtf = new JTextField(12);final JButton saveAction = new...
如何用Java 获得 使用sql 语句 select 受影响的行数?
答:
rs.last();int rowCount = rs.getRow();或者 int rowCount = 0;while(rset.next()) { rowCount++;} 其实,如果你只要行数,不要其他东西,改一下sql就行了 String sql = "select count(*) from student where snum = '"+a+"' and password = '"+b+"'";直接查询行数 int rowCount ...
java swing点击红色按钮背景显示红色? (框架不要改)
答:
EventQueue.
invokeLater
(new Runnable() { public void run() { try { Background window = new Background();window.frame.setVisible(true);} catch (Exception e) { e.printStackTrace();} } });} / Create the application./ public Background() { initialize();} / Initialize the ...
求Java编的登录界面代码:登录后分别进入管理员界面及用户界面,依据是数 ...
答:
EventQueue.
invokeLater
(new Runnable() { public void run() { try { Cilent window = new Cilent(); window.frame.setVisible(true); } catch (Exception e) { e.printStackTrace(); } } }); } /** * Create the application. */ public Cilent() { initialize(); } /** * Initialize the conte...
java点击按钮清空文本框并且将光标切换到文本框?
答:
获取焦点的代码如下:SwingUtilities.
invokeLater
(new Runnable() {public void run() {jtx1.requestFocus();//jtx1是你的文本框对象 }});
JAVA 进度条刷新不了
答:
AWT 线程要处理鼠标,文件读取等,又要处理进度条显示,肯定会线程阻塞 解决办法,是在另一线程中启动文件读取或者进度条:Thread thread = new Thread(new Runnable() { public void run() { fileRead();} });不过要注意同步问题,有时会有意想不到的结果。 over ^_^ ...
求java大神写一个JTextArea加背景图片的类:
答:
import javax.imageio.*;import javax.swing.*;import java.awt.*;import java.io.*;/** * @author Hardneedl */final class TextAreaPictureDemo extends JFrame { public String getTitle() {return "TextAreaPictureDemo";} static private final Dimension size = new Dimension(600,40...
首页
<上一页
40
41
42
43
44
45
46
47
48
76
其他人还搜