如何获取 JProgressBar 组件的值并显示在控制台中?
java 8object oriented programmingprogramming更新于 2025/9/8 7:40:17
假设我们为 JProgressBar 设置了以下值 −
int min = 0; int max = 1000; progressBar = new JProgressBar(min, max);
现在，获取上述值并显示在控制台 −
int value = progressBar.getValue();
System.out.println("Value = "+value);
System.out.println("Minimum = "+progressBar.getMinimum());
System.out.println("Maximum = "+progressBar.getMaximum());
以下是获取进度条组件值的示例 −
示例
package my;
import javax.swing.*;
public class SwingDemo extends JFrame {
JProgressBar progressBar;
int i = 0;
SwingDemo() {
int min = 0;
int max = 1000;
progressBar = new JProgressBar(min, max);
int value = progressBar.getValue();
System.out.println("Value = "+value);
System.out.println("Minimum = "+progressBar.getMinimum());
System.out.println("Maximum = "+progressBar.getMaximum());
progressBar.setBounds(70, 50, 120, 30);
progressBar.setValue(0);
progressBar.setStringPainted(true);
add(progressBar);
setSize(550, 150);
setLayout(null);
}
public void inc() {
while (i <= 1000) {
progressBar.setValue(i);
i = i + 50;
try {
Thread.sleep(100);
} catch (Exception e) {}
}
}
public static void main(String[] args) {
SwingDemo s = new SwingDemo();
s.setVisible(true);
s.inc();
}
}
这将产生以下输出 −
控制台中显示以下内容 −
