java做的学生管理系统

				package studentms;								import com.borland.jbcl.layout.*;				import java.awt.event.*;								public class addStuInfo extends stuInfo{				  public addStuInfo() {				     jBAdd.setVisible(false);				     jBModify.setVisible(false);				     jBDelete.setVisible(false);				     jBSee.setVisible(false);				     jBSearch.setVisible(false);				     jBSum.setVisible(false);				     jBGrade.setVisible(false);				     this.getContentPane().add(jPanel1,  new XYConstraints(3, -20, 333, 220));				     jPanel1.add(jBSave, new XYConstraints(163, 218, 53, 23));				     jPanel1.add(jBCancel, new XYConstraints(224, 218, 53, 23));				     jPanel1.add(jBExit, new XYConstraints(284, 218, 53, 23));				     xYLayout1.setWidth(384);				     xYLayout1.setHeight(240);				     this.setTitle("添加信息");				  }								  void jBCancel_actionPerformed(ActionEvent e) {				      this.setNull() ;				  }								}