界面系统运行界面03--java

紧接02的代码继续写，接下去是进入到专业班级。不同按钮转到不同的界面。在02中有student，teacher，leader三类；本代码实现了studentmanageframe，剩下的teacher和leader读者自己完成，完全一样。完成这个之后已经成功了一大半，接下来是需要链接到数据库将数据导入。
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;

public class studentmanageframe extends JPanel {
static final int WIDTH = 400;
static final int HEIGHT = 200;
//JFrame buttonframe;

public void add(Component c, GridBagConstraints constraints, int x, int y, int w, int h){    constraints.gridx = x;    constraints.gridy = y;    constraints.gridwidth = w;    constraints.gridheight = h;    add(c,constraints);}public studentmanageframe(){    JFrame studentframe = new JFrame("学生信息管理系统");    //buttonframe.setTitle("学校信息管理系统");    studentframe .setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);    studentframe.setSize(WIDTH, HEIGHT);    Toolkit kit = Toolkit.getDefaultToolkit();    //获取屏幕的大小对象    Dimension screenSize = kit.getScreenSize();    int width = screenSize.width;    int height = screenSize.height;    int x = (width-WIDTH)/2;    int y = (height - HEIGHT)/2;    studentframe.setLocation(x,  y);    studentframe.setVisible(true);    studentframe.add(this, BorderLayout.CENTER);    JButton computerone = new JButton("计算机一班");    JButton computertwo = new JButton("计算机二班");    JButton computerthree = new JButton("计算机三班");    JButton bioone = new JButton("生物一班");    JButton mechone = new JButton("机械一班");    JButton mechtwo = new JButton("机械二班");    JButton mechthree = new JButton("机械三班");    JLabel title = new JLabel("学生信息系统主界面");    JLabel banket1 = new JLabel();    JLabel banket2 = new JLabel();    GridBagLayout lay = new GridBagLayout();    setLayout(lay);    GridBagConstraints constraints = new GridBagConstraints();    constraints.fill = GridBagConstraints.NONE;    constraints.anchor = GridBagConstraints.EAST;    constraints.weightx = 2;    constraints.weighty = 5;    JPanel jp = new JPanel();    jp.setLayout(new GridLayout(1, 3));    jp.add(banket1);    jp.add(title);    jp.add(banket2);    studentframe.add(jp, BorderLayout.NORTH);    add(computerone, constraints, 0, 1, 1, 1);    add(computertwo, constraints, 0, 2, 1, 1);    add(computerthree, constraints, 0, 3, 1, 1);    add(bioone, constraints, 0, 4, 1, 1);    add(mechone, constraints, 1, 1, 1, 1);    add(mechtwo , constraints, 1, 2, 1, 1);    add(mechthree , constraints, 1, 3, 1, 1);    computerone.addActionListener(new ActionListener(){        public void actionPerformed(ActionEvent Event){            String sq1 = "select * from studentinfo where class = '一班' and major = '计算机'";            studentinfo info = new studentinfo("计算机一班学生信息系统", sql);        }    });    computertwo.addActionListener(new ActionListener(){        public void actionPerformed(ActionEvent Event){            String sq1 = "select * from studentinfo where class = '二班' and major = '计算机'";            studentinfo info = new studentinfo("计算机二班学生信息系统", sql);        }    });    computerthree.addActionListener(new ActionListener(){        public void actionPerformed(ActionEvent Event){            String sq1 = "select * from studentinfo where class = '三班' and major = '计算机'";            studentinfo info = new studentinfo("计算机三班学生信息系统", sql);        }    });    bioone.addActionListener(new ActionListener(){        public void actionPerformed(ActionEvent Event){            String sq1 = "select * from studentinfo where class = '一班' and major = '生物系'";            studentinfo info = new studentinfo("生物一班学生信息系统", sql);        }    });    mechone.addActionListener(new ActionListener(){        public void actionPerformed(ActionEvent Event){            String sq1 = "select * from studentinfo where class = '一班' and major = '机械'";            studentinfo info = new studentinfo("机械一班学生信息系统", sql);        }    });    mechtwo.addActionListener(new ActionListener(){        public void actionPerformed(ActionEvent Event){            String sq1 = "select * from studentinfo where class = '二班' and major = '机械'";            studentinfo info = new studentinfo("机械二班学生信息系统", sql);        }    });    mechthree.addActionListener(new ActionListener(){        public void actionPerformed(ActionEvent Event){            String sq1 = "select * from studentinfo where class = '三班' and major = '机械'";            studentinfo info = new studentinfo("机械三班学生信息系统", sql);        }    }); }

}