s1(java)项目实战（固定资产管理）（set_ fatherkindadd ）

package set;

import java.awt.*;
import java.awt.event.*;
import java.util.*;
import tools.*;
import javax.swing.*;
import java.awt.Rectangle;

public class fatherkindadd extends JDialog {
    private JLabel jLabel1 = new JLabel();
    private JTextField txt_kindsID;
    private JTextField txt_kindsname = new JTextField();
    private JLabel jLabel2 = new JLabel();
    private JButton btnOK = new JButton();
    private JButton btn_cancle = new JButton();
    private DBConnection dcon = null;

    public fatherkindadd(Frame owner, String title, boolean modal) {
        super(owner, title, modal);
        try {
            setDefaultCloseOperation(DISPOSE_ON_CLOSE);
            jbInit();
            pack();
        } catch (Exception exception) {
            exception.printStackTrace();
        }
    }

    public fatherkindadd() {
        this(new Frame(), "Dialog1", false);
    }

    private void jbInit() throws Exception {
        txt_kindsID = new JTextField(getFatherKindsID());
        this.getContentPane().setLayout(null);
        jLabel1.setFont(new java.awt.Font("Dialog", Font.BOLD, 13));
        jLabel1.setText("科 目 ID");
        jLabel1.setBounds(new Rectangle(29, 41, 61, 28));
        txt_kindsname.setBounds(new Rectangle(84, 91, 71, 26));
        jLabel2.setFont(new java.awt.Font("Dialog", Font.BOLD, 13));
        jLabel2.setText("科目名称");
        jLabel2.setBounds(new Rectangle(26, 88, 61, 28));
        btnOK.setBounds(new Rectangle(19, 147, 62, 29));
        btnOK.setText("确定");
        this.getContentPane().add(jLabel2);
        btn_cancle.setBounds(new Rectangle(105, 147, 67, 30));
        btn_cancle.setText("取消");
        this.getContentPane().add(jLabel1);
        this.getContentPane().add(txt_kindsID);
        this.getContentPane().add(txt_kindsname);
        this.getContentPane().add(btnOK);
        this.getContentPane().add(btn_cancle);
        txt_kindsID.setEditable(false);
        txt_kindsID.setBounds(new Rectangle(84, 47, 71, 26));
        btn_cancle.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                closedialog();
            }
        });
        btnOK.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                addfatherkind();
            }
        });
    }

    //add
    private void addfatherkind() {
        if (txt_kindsname.getText().trim().length() == 0) {
            JOptionPane.showMessageDialog(this, "名称不能为空");
        } else {
            dcon = new DBConnection();
            String sql = "select * from FatherKind where fatherkind_name='" +
                         txt_kindsname.getText().trim() + "'";
            if (dcon.isNull(sql)) {
                JOptionPane.showMessageDialog(this, "该名称已经存在");
                txt_kindsname.setText("");
            } else {
                sql =
                        "insert into FatherKind(fatherkind_id,fatherkind_name) values ('" +
                        txt_kindsID.getText().trim() + "','" +
                        txt_kindsname.getText().trim() + "')";
                JOptionPane.showMessageDialog(this, dcon.update(3, sql));
                this.dispose();
            }
        }
    }

//close
    public void closedialog() {
        this.dispose();
    }

    //获取ID
    private String getFatherKindsID() {
        dcon = new DBConnection();
        Vector v = dcon.select(
                "select fatherkind_id from FatherKind order by fatherkind_id asc");
        if (v.size() == 0) {
            return "101";
        }
        int autoID = 101;
        for (int i = 0; i < v.size(); i++) {
            String s = ((Vector) v.get(i)).get(0).toString();
            int getID = Integer.parseInt(s);
            if (autoID != getID) {
                return String.valueOf(autoID);
            }
            autoID++;
        }
        return String.valueOf(v.size() + 1 + 100);
    }
}