line.java

自制小画板！为JBUILDER版本。相当具有参考价值

package drawingpanel;
import java.awt.*;		//导入awt的类
import java.awt.geom.*;		//导入awt的geom类
/**直线类**/
	class Line extends drawings{
		void draw(Graphics2D g2d){					//用图形图像处理工具
			g2d.setPaint(new Color(R,G,B));			//设置画笔颜色
			g2d.setStroke(new BasicStroke(stroke,	//设置绘画风格为基本型
				BasicStroke.CAP_ROUND,BasicStroke.JOIN_BEVEL));
			g2d.drawLine(x1,y1,x2,y2);				//画直线
		}
	}