linux 下面X11库是干什么的

X11也叫做X Window系统，是图形化窗口管理系统 。它是诞生于Unix 、以及 OpenVMS，是传统上Unix环境中建立图形用户界面 的标准工具包和协议。 Linux *** 作系统下的图形管理界面（GNOME、KDE）也是基于X11运行库基础上开发的。

Exception in thread "main" [<u style="word-break: break-allline-height: normal"> java </u>](javascript:).lang.InternalError: Can't connect to X11 window [<u style="word-break: break-allline-height: normal"> server </u>](javascript:) using 'localhost:11.0' as the value of the DISPLAY variable. at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method) at sun.awt.X11GraphicsEnvironment.<clinit style="word-break: break-allline-height: normalcolor: rgb(0, 0, 0)font-family: Arial, Helvetica, sans-seriffont-size: 12pxfont-style: normalfont-variant-ligatures: normalfont-variant-caps: normalfont-weight: normalletter-spacing: normalorphans: 2text-align: lefttext-indent: 0pxtext-transform: nonewhite-space: normalwidows: 2word-spacing: 0px-webkit-text-stroke-width: 0pxbackground-color: rgb(255, 255, 255)">(X11GraphicsEnvironment.java:134) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:141) at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:62) at java.awt.Font.initializeFont(Font.java:308) at java.awt.Font.<init style="word-break: break-allline-height: normal">(Font.java:344) at org.jfree.chart.axis.AxisConstants.<clinit style="word-break: break-allline-height: normal">(Unknown Source) at org.jfree.chart.axis.Axis.<init style="word-break: break-allline-height: normal">(Unknown Source) at org.jfree.chart.axis.CategoryAxis.<init style="word-break: break-allline-height: normal">(Unknown Source) at org.jfree.chart.ChartFactory.createLineChart(Unknown Source) </init></init></clinit></init></clinit>

<clinit style="word-break: break-allline-height: normal !important"><init style="word-break: break-allline-height: normal !important"><clinit style="word-break: break-allline-height: normal !important"><init style="word-break: break-allline-height: normal !important"><init style="word-break: break-allline-height: normal !important">linux上就报以上错误原因是windows内核集成了gui，而linux上没有启动x server</init></init></clinit></init></clinit>

<clinit style="word-break: break-allline-height: normal !important"><init style="word-break: break-allline-height: normal !important"><clinit style="word-break: break-allline-height: normal !important"><init style="word-break: break-allline-height: normal !important"><init style="word-break: break-allline-height: normal !important">解决办法：</init></init></clinit></init></clinit>

<clinit style="word-break: break-allline-height: normal !important"><init style="word-break: break-allline-height: normal !important"><clinit style="word-break: break-allline-height: normal !important"><init style="word-break: break-allline-height: normal !important"><init style="word-break: break-allline-height: normal !important">1、启动x server2。在java运行参数上加-Djava.awt.headless=true ，应该是在/usr/java/jdk1.6.0_23/bin文件夹下的javac文件中</init></init></clinit></init></clinit>

<clinit style="word-break: break-allline-height: normal !important"><init style="word-break: break-allline-height: normal !important"><clinit style="word-break: break-allline-height: normal !important"><init style="word-break: break-allline-height: normal !important"><init style="word-break: break-allline-height: normal !important">2、单个程序的启动脚本中增加java的运行参数，比如tomcat</init></init></clinit></init></clinit>

<clinit data-filtered="filtered" style="word-break: break-allline-height: normal !important"><init data-filtered="filtered" style="word-break: break-allline-height: normal !important"><clinit data-filtered="filtered" style="word-break: break-allline-height: normal !important"><init data-filtered="filtered" style="word-break: break-allline-height: normal !important"><init data-filtered="filtered" style="word-break: break-allline-height: normal !important">/bin/catalina.sh在 所有的（请注意，是所有） -Dcatalina.home="$CATALINA_HOME" /

下面都加上了-Djava.awt.headless=true</init></init></clinit></init></clinit>

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