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📜  Java Swing-JSlider

📅  最后修改于: 2020-09-30 06:38:55             🧑  作者: Mango

Java JSlider

Java JSlider类用于创建滑块。通过使用JSlider，用户可以从特定范围中选择一个值。

JSlider类的常用构造函数

Constructor Description
JSlider() creates a slider with the initial value of 50 and range of 0 to 100.
JSlider(int orientation) creates a slider with the specified orientation set by either JSlider.HORIZONTAL or JSlider.VERTICAL with the range 0 to 100 and initial value 50.
JSlider(int min, int max) creates a horizontal slider using the given min and max.
JSlider(int min, int max, int value) creates a horizontal slider using the given min, max and value.
JSlider(int orientation, int min, int max, int value) creates a slider using the given orientation, min, max and value.

JSlider类的常用方法

Method Description
public void setMinorTickSpacing(int n) is used to set the minor tick spacing to the slider.
public void setMajorTickSpacing(int n) is used to set the major tick spacing to the slider.
public void setPaintTicks(boolean b) is used to determine whether tick marks are painted.
public void setPaintLabels(boolean b) is used to determine whether labels are painted.
public void setPaintTracks(boolean b) is used to determine whether track is painted.

Java JSlider示例

import javax.swing.*;
public class SliderExample1 extends JFrame{
public SliderExample1() {
JSlider slider = new JSlider(JSlider.HORIZONTAL, 0, 50, 25);
JPanel panel=new JPanel();
panel.add(slider);
add(panel);
}

public static void main(String s[]) {
SliderExample1 frame=new SliderExample1();
frame.pack();
frame.setVisible(true);
}
}

输出：

Java JSlider示例：画壁虱

import javax.swing.*;
public class SliderExample extends JFrame{
public SliderExample() {
JSlider slider = new JSlider(JSlider.HORIZONTAL, 0, 50, 25);
slider.setMinorTickSpacing(2);
slider.setMajorTickSpacing(10);
slider.setPaintTicks(true);
slider.setPaintLabels(true);

JPanel panel=new JPanel();
panel.add(slider);
add(panel);
}
public static void main(String s[]) {
SliderExample frame=new SliderExample();
frame.pack();
frame.setVisible(true);
}
}

输出：