本文实例为大家分享了jfreechart动态画折线图的具体代码，供大家参考，具体内容如下
每隔一秒画一次，一分钟后重新画
需要的jar包是：gnujaxp.jar，jcommon-1.0.16.jar，jfreechart-1.0.13.jar
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public class jfreezhexiantest{ public static xyseries xycpuseries = new xyseries("cpu"); public static int hundroud = 0; public static jfreechart jfreechart = null; public jpanel getcpujfreechart(){ jfreechart = chartfactory.createxylinechart( null, null, null, createdataset1(), plotorientation.vertical, false, true, false); standardcharttheme mcharttheme = new standardcharttheme("cn"); mcharttheme.setlargefont(new font("黑体", font.bold, 20)); mcharttheme.setextralargefont(new font("宋体", font.plain, 15)); mcharttheme.setregularfont(new font("宋体", font.plain, 15)); chartfactory.setcharttheme(mcharttheme); jfreechart.setborderpaint(new color(0,204,205)); jfreechart.setbordervisible(true); xyplot xyplot = (xyplot) jfreechart.getplot(); // y轴 numberaxis numberaxis = (numberaxis) xyplot.getrangeaxis(); numberaxis.setlowerbound(0); numberaxis.setupperbound(100); numberaxis.settickunit(new numbertickunit(100d)); // 只显示整数值 numberaxis.setstandardtickunits(numberaxis.createintegertickunits()); // numberaxis.setautorangeincludeszero(true); numberaxis.setlowermargin(0); // 数据轴下（左）边距 numberaxis.setminortickmarksvisible(false);// 标记线是否显示 numberaxis.settickmarkinsidelength(0);// 外刻度线向内长度 numberaxis.settickmarkoutsidelength(0); // x轴的设计 numberaxis x = (numberaxis) xyplot.getdomainaxis(); x.setautorange(true);// 自动设置数据轴数据范围 // 自己设置横坐标的值 x.setautotickunitselection(false); x.settickunit(new numbertickunit(60d)); // 设置最大的显示值和最小的显示值 x.setlowerbound(0); x.setupperbound(60); // 数据轴的数据标签：只显示整数标签 x.setstandardtickunits(numberaxis.createintegertickunits()); x.setaxislinevisible(true);// x轴竖线是否显示 x.settickmarksvisible(false);// 标记线是否显示 rectangleinsets offset = new rectangleinsets(0, 0, 0, 0); xyplot.setaxisoffset(offset);// 坐标轴到数据区的间距 xyplot.setbackgroundalpha(0.0f);// 去掉柱状图的背景色 xyplot.setoutlinepaint(null);// 去掉边框 // chartpanel chartpanel = new chartpanel(jfreechart); // chartpanel.restoreautodomainbounds();//重置x轴 chartpanel chartpanel = new chartpanel(jfreechart, true); return chartpanel; } /** * 该方法是数据的设计 * * @return */ public static xydataset createdataset1() { xyseriescollection xyseriescollection = new xyseriescollection(); xyseriescollection.addseries(xycpuseries); return xyseriescollection; } /** * 随机生成的数据 */ public static void dynamicrun() { int i = 0; while (true) { double factor = math.random()*100; hundroud = (int)factor; jfreechart.settitle("cpu的大小是： "+hundroud+"%"); jfreechart.gettitle().setfont(new font("微软雅黑", 0, 16));//设置标题字体 xycpuseries.add(i, factor); try { thread.currentthread(); thread.sleep(1000); } catch (interruptedexception e) { e.printstacktrace(); } i++; if (i == 60){ i=0; xycpuseries.delete(0, 59); continue; } } } public static void main(string[] args) { jfreezhexiantest jz = new jfreezhexiantest(); jframe frame = new jframe(); frame.setsize(700, 500); frame.getcontentpane().add(jz.getcpujfreechart(), borderlayout.center); frame.setvisible(true); frame.setlocationrelativeto(null); // 窗口居于屏幕正中央 frame.setdefaultcloseoperation(windowconstants.exit_on_close); dynamicrun(); }} |
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/ygl19920119/article/details/78182598
