Question

java中如何设置线条的粗细例题?

Answer 1

import javax.swing.*;
import java.awt.*;
import java.awt.geom.*;
public class Example6_5 extends JFrame
{
	public Example6_5()
	{
		super("设置线条粗细");
		setSize(180,180);
		setVisible(true);
		setDefaultCloseOperation(EXIT_ON_CLOSE);
	}
	public static void main(String[] args)
	{
		new Example6_5();
	}
	public void paint(Graphics g)
	{
		Graphics2D g_2d=(Graphics2D)g;
		Line2D line_1=new Line2D.Double(50,50,120,50);
		Line2D line_2=new Line2D.Double(50,80,120,80);
		Line2D line_3=new Line2D.Double(50,110,120,110);
		BasicStroke bs_1=new BasicStroke(16,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL);
		BasicStroke bs_2=new BasicStroke(16f,BasicStroke.CAP_ROUND,BasicStroke.JOIN_MITER);
		BasicStroke bs_3=new BasicStroke(16f,BasicStroke.CAP_SQUARE,BasicStroke.JOIN_ROUND);
		g_2d.setStroke(bs_1);
                g_2d.draw(line_1);
		g_2d.setStroke(bs_2);
                g_2d.draw(line_2);
		g_2d.setStroke(bs_3);
		g_2d.draw(line_3);
	}
}

Answer 2

Java线条粗细一般要使用java Swing方面的知识 

import javax.swing.*;
import java.awt.*;
import java.awt.geom.*;
public class Example6_5 extends JFrame
{
    public Example6_5()
    {
        super("设置线条粗细");
        setSize(180,180);
        setVisible(true);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
    }
    public static void main(String[] args)
    {
        new Example6_5();
    }
    public void paint(Graphics g)
    {
        Graphics2D g_2d=(Graphics2D)g;
        Line2D line_1=new Line2D.Double(50,50,120,50);
        Line2D line_2=new Line2D.Double(50,80,120,80);
        Line2D line_3=new Line2D.Double(50,110,120,110);
        BasicStroke bs_1=new BasicStroke(16,BasicStroke.CAP_BUTT,BasicStroke.JOIN_BEVEL);
        BasicStroke bs_2=new BasicStroke(16f,BasicStroke.CAP_ROUND,BasicStroke.JOIN_MITER);
        BasicStroke bs_3=new BasicStroke(16f,BasicStroke.CAP_SQUARE,BasicStroke.JOIN_ROUND);
        g_2d.setStroke(bs_1);
                g_2d.draw(line_1);
        g_2d.setStroke(bs_2);
                g_2d.draw(line_2);
        g_2d.setStroke(bs_3);
        g_2d.draw(line_3);
    }
}