JButton tmpBtn = new JButton();    for(int i = 0; i < components.length; i++){      components[i].setFont(dialog13);      if(components[i].getClass().getName().equals("javax.swing.JButton")){        tmpBtn = (JButton)components[i];        tmpBtn.addActionListener(this);      }    }  }  //退出方法  public void exit(){    //隱藏窗口    this.setVisible(false);    //清空數(shù)組的內(nèi)容    supplier = new String[0][16];    //清空列表框的內(nèi)容    listData1.clear();    //取得面板上的所有控件    Component[] components = contentPane.getComponents();    //創(chuàng)建臨時(shí)文本框控件    JTextField tmpTextField = new JTextField();    for(int i = 0; i < components.length; i++){      if(components[i].getClass().getName().equals("javax.swing.JTextField")){        tmpTextField = (JTextField)components[i];        //清空編輯框的內(nèi)容        tmpTextField.setText("");      }    }  }  //顯示查詢供應(yīng)商的方法  public void showSearchSupplier(){    listData1.clear();    //為供應(yīng)商列表框加入供應(yīng)商數(shù)據(jù)    for(int i = 0; i < supplier.length; i++){      listData1.addElement(supplier[i][0]);    }  }  //顯示單個(gè)供應(yīng)商的方法  public void showSupplier(){    //取得當(dāng)前選擇項(xiàng)的位置    int selectedIndex = jList1.getSelectedIndex();    //當(dāng)列表框不處于選擇狀態(tài)，不顯示數(shù)據(jù)    if(selectedIndex == -1){       return;    }    //顯示供應(yīng)商的數(shù)據(jù)    jTextField1.setText(supplier[selectedIndex][0]);    jTextField2.setText(supplier[selectedIndex][1]);    jTextField3.setText(supplier[selectedIndex][2]);    jTextField4.setText(supplier[selectedIndex][3]);    jTextField5.setText(supplier[selectedIndex][4]);    jTextField6.setText(supplier[selectedIndex][5]);    jTextField7.setText(supplier[selectedIndex][6]);    jTextField8.setText(supplier[selectedIndex][7]);    jTextField9.setText(supplier[selectedIndex][8]);    jTextField10.setText(supplier[selectedIndex][9]);    jTextField11.setText(supplier[selectedIndex][10]);    jTextField12.setText(supplier[selectedIndex][11]);    jTextField13.setText(supplier[selectedIndex][12]);    jTextField14.setText(supplier[selectedIndex][13]);    jTextField15.setText(supplier[selectedIndex][14]);    jTextArea1.setText(supplier[selectedIndex][15]);  }  //清空單個(gè)供應(yīng)商顯示的方法  public void clearSupplier(){    jTextField1.setText("");    jTextField2.setText("");    jTextField3.setText("");    jTextField4.setText("");    jTextField5.setText("");    jTextField6.setText("");    jTextField7.setText("");    jTextField8.setText("");    jTextField9.setText("");    jTextField10.setText("");    jTextField11.setText("");    jTextField12.setText("");    jTextField13.setText("");    jTextField14.setText("");    jTextField15.setText("");    jTextArea1.setText("");  }  //設(shè)置用戶的方法  public void setUser(User user) {    this.user = user;  }  protected void processWindowEvent(WindowEvent e) {    if (e.getID() == WindowEvent.WINDOW_CLOSING) {      exit();    }  }  //檢查按鈕的狀態(tài)  public void checkBtn(boolean isManipulated){    if(isManipulated){      jButton2.setEnabled(false);      jButton3.setEnabled(false);      jButton4.setEnabled(false);      jButton5.setEnabled(true);      jButton6.setEnabled(true);    }else{      jButton2.setEnabled(true);      jButton3.setEnabled(true);      jButton4.setEnabled(true);      jButton5.setEnabled(false);      jButton6.setEnabled(false);    }  }  //列表1的選擇事件  void jList1_valueChanged(ListSelectionEvent e) {    if(listData1.size() > 0){      this.showSupplier();    }else{      this.clearSupplier();    }  }  //查詢方法  public void search(){    //取得查詢選項(xiàng)    int selectedIndex = jComboBox1.getSelectedIndex();    String searchValue = jTextField16.getText().trim();    switch (selectedIndex) {      case 0:        //根據(jù)供應(yīng)商名字取得記錄        supplier = stockManagementData.getSuppliersBySupplierName(searchValue);        break;      case 1:        //根據(jù)地區(qū)取得記錄        supplier = stockManagementData.getSuppliersBySupplierZone(searchValue);        break;    }    this.showSearchSupplier();  }  //單擊事件方法  public void actionPerformed(ActionEvent e) {    //取得按鈕的動(dòng)作字符串    String actionCommand = e.getActionCommand().trim();    if(actionCommand.equals("update") | actionCommand.equals("delete")){      if(jList1.isSelectionEmpty()){        JOptionPane.showMessageDialog(null, "請選擇供應(yīng)商.");        return;      }    }    //單擊按鈕的處理代碼    if (actionCommand.equals("search")) {      String searchValue = jTextField16.getText().trim();      if(searchValue.length() == 0){        JOptionPane.showMessageDialog(null, "請輸入查詢值");        return;      }      //查詢      search();    }else if(actionCommand.equals("create")){      action = "create";      this.clearSupplier();      this.checkBtn(true);    }else if(actionCommand.equals("update")){      action = "update";      this.checkBtn(true);    }else if(actionCommand.equals("delete")){      action = "delete";      this.checkBtn(true);    }else if(actionCommand.equals("ok")){      //取得供應(yīng)商的值      String[] supplierArray = new String[16];      supplierArray[0] = jTextField1.getText().trim();      supplierArray[1] = jTextField2.getText().trim();      supplierArray[2] = jTextField3.getText().trim();      supplierArray[3] = jTextField4.getText().trim();      supplierArray[4] = jTextField5.getText().trim();      supplierArray[5] = jTextField6.getText().trim();      supplierArray[6] = jTextField7.getText().trim();      supplierArray[7] = jTextField8.getText().trim();      supplierArray[8] = jTextField9.getText().trim();      supplierArray[9] = jTextField10.getText().trim();      supplierArray[10] = jTextField11.getText().trim();      supplierArray[11] = jTextField12.getText().trim();      supplierArray[12] = jTextField13.getText().trim();      supplierArray[13] = jTextField14.getText().trim();      supplierArray[14] = jTextField15.getText().trim();      supplierArray[15] = jTextArea1.getText().trim();      if(supplierArray[0].length() == 0){        JOptionPane.showMessageDialog(null, "供應(yīng)商名字不允許空值.");        return;      }      if(action.equals("create")){        //創(chuàng)建供應(yīng)商        int result = stockManagementData.createSupplier(supplierArray);        if(result == 1){          //為列表框加入供應(yīng)商          listData1.addElement(supplierArray[0]);          //更新供應(yīng)商數(shù)組          String[][] tempStrs = new String[supplier.length + 1][16];          System.arraycopy(supplier, 0, tempStrs, 0, supplier.length);          for(int i = 0; i < 16; i++){            tempStrs[supplier.length][i] = supplierArray[i];          }          supplier = tempStrs;          jList1.setSelectedIndex(listData1.size() -1);        }else{          JOptionPane.showMessageDialog(null, "供應(yīng)商創(chuàng)建失敗,請檢查該供應(yīng)商是否存在和值是否超出字段長度.");        }      }else if (action.equals("update")){        //更新供應(yīng)商        int result = stockManagementData.updateSupplier(supplierArray);        if(result == 1){          //更新供應(yīng)商數(shù)組          int selectedIndex = jList1.getSelectedIndex();          for(int i = 0; i < 16; i++){            supplier[selectedIndex][i] = supplierArray[i];          }        }else{          JOptionPane.showMessageDialog(null, "供應(yīng)商更新失敗.");        }      }else if (action.equals("delete")){        //刪除供應(yīng)商        int result = stockManagementData.deleteSupplier(supplierArray[0]);        if(result == 1){          int selectedIndex = jList1.getSelectedIndex();          //刪除列表框的數(shù)據(jù)          listData1.removeElementAt(selectedIndex);          //更改數(shù)組的數(shù)據(jù)          String[][] tempStrs = new String[supplier.length -1][16];          int line = 0;          for(int i = 0; i < supplier.length; i++){            if(i == selectedIndex){              continue;            }else{              for(int j = 0; j < 16; j++){                tempStrs[line][j] = supplier[i][j];              }              line++;            }          }          supplier = tempStrs;          //清空編輯框的值          this.clearSupplier();        }else{          JOptionPane.showMessageDialog(null, "供應(yīng)商刪除失敗.");        }      }      this.checkBtn(false);    }else if(actionCommand.equals("cancel")){       this.jList1_valueChanged(null);       this.checkBtn(false);    }else if(actionCommand.equals("exit")){      exit();    }  }}