火车票售票系统源代码（Train ticket booking system source code）.doc

火车票售票系统源代码（Train ticket booking system source code） import java.awt. *; import java.awt.event.actionevent; import java.awt.event.actionlistener; import java.io. *; import javax.swing. *; import javax.swing.border.titledborder; import java.io.bufferedwriter; import java.io.file; import java.io.filenotfoundexception; import java.io.filereader; import java.io.filewriter; import java.io.ioexception; import java.sql.drivermanager; import java.sql.resultset; import java.sql.statement; public class traininformationquery extends jframe { private container file. private component open; public traininformationquery () { jpanel p1 = new jpanel (new flowlayout (flowlayout.center)); jpanel p2 = new jpanel (new flowlayout (flowlayout.center)); jpanel p3 = new jpanel (new flowlayout (flowlayout.center)); jpanel p4 = new jpanel (); jlabel jlb1 = new jlabel (火车站列车时刻表); jlabel jlb2 = new jlabel (车次); the final jtextfield jtf = new jtextfield (8). jbutton jbt1 = new jbutton (查询); jbutton jbt2 = new jbutton (全部火车信息); the final jtextarea jta = new jtextarea (10.30); p1.add (jlb1); p2.add (jta); p2.setborder (new titledborder ()); p3.add (jlb2); p3.add (jtf); p3.add (jbt1); p3.add (jbt2); p4.add (p1, borderlayout.north); p4.add (p2, borderlayout.center); p4.add (p3, borderlayout.south); p4.setborder (new titledborder ()); add (p4). / / 查询按钮 the final jpanel panel = new jpanel (); jbt1.addactionlistener (new actionlistener () { public void actionperformed (actionevent) { jfilechooser openfile = new jfilechooser (); openfile.setdialogtitle (打开文件); openfile.setapprovebuttontext (打开); openfile.showopendialog (panel). file filename = openfile.getselectedfile (); stringbuffer strbf = new stringbuffer (); string error _ message = error. fileinputstream inputfile = null; try { char buffer [] = new char [1024]; inputfile = new fileinputstream (filename); int i = 0; / / 如下为依次读取文件中的每一行内容, 将其加入stringbuffer数据类型便利strbf中 filereader = new filereader (filename.getabsolutefile ()); while ((len = in.read (