AWT BasicStroke类

BasicStroke的类声明中的颜色默认sRGB颜色空间或颜色的任意颜色空间中的颜色确定。

类的声明

以下是声明的java.awt.BasicStroke类：

public class BasicStroke
   extends Object
      implements Stroke

字段域

以下是java.awt.geom.Arc2D类字段：

static int CAP_BUTT -- 结束未封闭的子路径和虚线线段与不加装饰。
static int CAP_ROUND -- 结束未封闭的子路径和虚线线段与一个圆形的装饰，有一个半径等于一半的笔宽。
static int CAP_SQUARE -- 结束未封闭的子路径和虚线段的具有方形的突起，伸出的端部的线宽度的一半的距离等于的段。
static int JOIN_BEVEL -- 加入通过其广泛的轮廓用直线段连接外眼角的路径段。
static int JOIN_MITER -- 加入路径段延伸的外边缘，直到他们满足。
static int JOIN_ROUND -- 加入路径段，通过舍入的拐角处的半径处的线宽度的一半。

类的构造函数

S.N.	构造函数与说明
1	BasicStroke() Constructs a new BasicStroke with defaults for all attributes.
2	BasicStroke(float width) Constructs a solid BasicStroke with the specified line width and with default values for the cap and join styles.
3	BasicStroke(float width, int cap, int join) Constructs a solid BasicStroke with the specified attributes.
4	BasicStroke(float width, int cap, int join, float miterlimit) Constructs a solid BasicStroke with the specified attributes.
5	BasicStroke(float width, int cap, int join, float miterlimit, float[] dash, float dash_phase) Constructs a new BasicStroke with the specified attributes.

类方法

S.N.	方法和说明
1	Shape createStrokedShape(Shape s) Returns a Shape whose interior defines the stroked outline of a specified Shape.
2	boolean equals(Object obj) Tests if a specified object is equal to this BasicStroke by first testing if it is a BasicStroke and then comparing its width, join, cap, miter limit, dash, and dash phase attributes with those of this BasicStroke.
3	float[] getDashArray() Returns the array representing the lengths of the dash segments.
4	float getDashPhase() Returns the current dash phase.
5	int getEndCap() Returns the end cap style.
6	int getLineJoin() Returns the line join style.
7	float getLineWidth() Returns the line width.
8	float getMiterLimit() Returns the limit of miter joins.
9	int hashCode() Returns the hashcode for this stroke.

继承的方法

这个类继承的方法从以下类：

java.lang.Object

BasicStroke 实例

选择使用任何编辑器创建以下java程序 D:/ > AWT > com > yiibai > gui >

AWTGraphicsDemo.java

package com.yiibai.gui;

import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;

public class AWTGraphicsDemo extends Frame {
       
   public AWTGraphicsDemo(){
      super("Java AWT Examples");
      prepareGUI();
   }

   public static void main(String[] args){
      AWTGraphicsDemo  awtGraphicsDemo = new AWTGraphicsDemo();  
      awtGraphicsDemo.setVisible(true);
   }

   private void prepareGUI(){
      setSize(400,400);
      addWindowListener(new WindowAdapter() {
         public void windowClosing(WindowEvent windowEvent){
            System.exit(0);
         }        
      }); 
   }    

   @Override
   public void paint(Graphics g) {
      Graphics2D g2 = (Graphics2D)g;        
      g2.setStroke(new BasicStroke(3.0f));
      g2.setPaint(Color.blue);

      Rectangle2D shape = new Rectangle2D.Float();
      shape.setFrame(100, 150, 200,100);
      g2.draw(shape);

      Rectangle2D shape1 = new Rectangle2D.Float();
      shape1.setFrame(110, 160, 180,80);
      g2.setStroke(new BasicStroke(1.0f));
   
      g2.draw(shape1);
      Font plainFont = new Font("Serif", Font.PLAIN, 24);        
      g2.setFont(plainFont);
      g2.setColor(Color.DARK_GRAY);
      g2.drawString("TutorialsPoint", 130, 200);
   }
}

编译程序，使用命令提示符。进入到D:/> AWT，然后键入以下命令。

D:AWT>javac comyiibaiguiAwtGraphicsDemo.java

如果没有错误出现，这意味着编译成功。使用下面的命令来运行程序。

D:AWT>java com.yiibai.gui.AwtGraphicsDemo

验证下面的输出