如何在 Java Swing 中绘制水平线
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How to Draw a Horizontal Line in Java Swing
提问by Lalchand
How does one draw a horizontal line using the Java Swing library? I know that I need to override paint(Graphics g)but I am not sure what to put in the method.
如何使用 Java Swing 库绘制一条水平线？我知道我需要覆盖，paint(Graphics g)但我不确定在方法中放什么。
@Override
public void paint(Graphics g)
{
// What goes here?
}
采纳答案by josefx
Depending on your use case, one of these tutorials should help you:
根据您的用例，这些教程之一应该可以帮助您：
- The Java Graphics APITutorial => drawing in a swing component
- The Java SwingTutorial => using swing components (such as JSeparator)
- Java图形 API教程 => 在摆动组件中绘图
- Java Swing教程 => 使用 Swing 组件（例如JSeparator）
Here an example class which draws a Black line
这是一个绘制黑线的示例类
public class MyLine extends JPanel
{
@Override public void paint(Graphics g)
{
//Get the current size of this component
Dimension d = this.getSize();
//draw in black
g.setColor(Color.BLACK);
//draw a centered horizontal line
g.drawLine(0,d.height/2,d.width,d.height/2);
}
}
回答by Noel M
Just like drawing any other line, except the value for the yaxis doesn't change.
就像绘制任何其他线一样，除了y轴的值不会改变。
