Java在文本中输入数字点击按钮后在文本框显示两组随机数字 java点击按钮输入相应文本

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半夜未央好 2023-06-29 16:14:53

文章标签 java中键盘按钮控制器 java JVM .net 文章分类 Java 后端开发

JDK ：OpenJDK-11
OS ：CentOS 7.6.1810
IDE ：Eclipse 2019‑03
typesetting ：Markdown

code

package per.jizuiku.gui;

import java.awt.Button;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

/**
 * @author 给最苦
 * @date 2019/06/30
 * @blog www.cnblogs.com/jizuiku
 */
public class Demo {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Frame f = new Frame();

        // 设置窗体大小
        int width = 300;
        int height = 400;
        f.setSize(width, height);

        // 创建按钮对象,在按钮上添加文字
        Button b = new Button("I am a button.");
        b.setSize(10, 30);

        // 点击按钮后
        b.addActionListener(new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent e) {
                // TODO Auto-generated method stub
                System.out.println("点击按钮");
            }
        });

        // 采用了流式布局
        f.setLayout(new FlowLayout());

        // 把按钮添加到窗体上
        f.add(b);

        // 设置窗体可见
        f.setVisible(true);
    }

}

result

Java在文本中输入数字点击按钮后在文本框显示两组随机数字 java点击按钮输入相应文本_JVM

点击按钮
点击按钮
点击按钮

sourceCode

/**
     * Adds the specified action listener to receive action events from
     * this button. Action events occur when a user presses or releases
     * the mouse over this button.
     * If l is null, no exception is thrown and no action is performed.
     * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
     * >AWT Threading Issues</a> for details on AWT's threading model.
     *
     * @param         l the action listener
     * @see           #removeActionListener
     * @see           #getActionListeners
     * @see           java.awt.event.ActionListener
     * @since         1.1
     */
    public synchronized void addActionListener(ActionListener l) {
        if (l == null) {
            return;
        }
        actionListener = AWTEventMulticaster.add(actionListener, l);
        newEventsOnly = true;
    }