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先请大家看看我的代码：importjavax.swing.*;importjava.awt.*;publicclassblessex1000tendsjframe{publicbless(){super(“边界布局“);setdefaultcloseoperation(jframe.exit_on_close);//关闭窗口方式jpaneljpall=newjpanel();jpaneljptop=newjpanel();getcontentpane().add(jpall);/*======对整体窗口进行设置========*/jtextareajta=newjtextarea(3,5);borderlayoutbl=newborderlayout();jpall.setlayout(bl);jpall.add(“north“,jptop);jpall.add(“south“,jta);/*=======对上部分面板进行设置======*/jpaneljp1=newjpanel();jpaneljp2=newjpanel();jpaneljp3=newjpanel();jpaneljp4=newjpanel();gridlayoutgl=newgridlayout(1,4);jptop.setlayout(gl);jptop.add(jp1);jptop.add(jp2);jptop.add(jp3);jptop.add(jp4);jp1.setlayout(newflowlayout(flowlayout.left));//????????jlabeljl1=newjlabel(“选择路径:“);strings={“d:“,“e:“,“f:“};jcomboboxjc=newjcombobox(s);jp1.add(jl1);jp1.add(jc);jp2.setlayout(newflowlayout(flowlayout.left));jlabeljl2=newjlabel(“文件大小:“);jtextfieldjtf=newjtextfield(2);jp2.add(jl2);jp2.add(jtf);jp3.setlayout(newflowlayout(flowlayout.left));jbuttonjb1=newjbutton(“开始写操作(w)“);jp3.add(jb1);jp4.setlayout(newflowlayout(flowlayout.left));jbuttonjb2=newjbutton(“ 心情签名(q)“);jp4.add(jb2);pack();//自动压缩窗口setvisible(true);//窗口可见模式}publicstaticvoidmian(stringarg){blessobj=newbless();}}．．．说明：我用cmd的javac可以编译通过，但是用java执行的时候却出现下面的报错提示：exceptioninthread“main“java.lang.nosuchmethoderror:main请大家帮我分析一下错误原因，我初学java的！
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