基本思路:
先创建出一个添加课程信息的框架,随后就设置按钮的鼠标监听事件,确保单机后录入信息的合法性,以及确定合法性之后的后续操作,如保存课程信息,信息有误弹出窗口等操作。
代码
package Test; import javax.swing.JButton; import java.io.*; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JTextField; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; public class SetClass { String str1="添加课程失败,请核对信息后添加", str2="添加成功"; JFrame jf=new JFrame("新课程添加"); JPanel panel=new JPanel(); JLabel addclass=new JLabel("课程名称"); JTextField addclasstext=new JTextField(); JLabel teacher=new JLabel("任课老师"); JTextField teachertext=new JTextField(); JLabel placeclass=new JLabel("上课地点"); JTextField placeclasstext=new JTextField(); JButton register=new JButton("添加"); public boolean judgeText(String filepath,String s) //判断信息的合法性 { String str=""; boolean flag=false; File file=new File(filepath); try { FileReader reader=new FileReader(file); BufferedReader br=new BufferedReader(reader); while((str=br.readLine())!=null) { if(str.equals(s)) flag=true; } br.close(); reader.close(); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } return flag; } public void inputFile(String filepath,JTextField jt) //将信息录入到文件中 { File file=new File(filepath); try { FileWriter reader = new FileWriter(file,true); BufferedWriter bw=new BufferedWriter(reader); bw.newLine(); bw.write(jt.getText()); bw.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public void setPanel(JPanel panel) //设置面板 { panel.setLayout(null); addclass.setBounds(30, 30, 80, 25); teacher.setBounds(30, 60, 80, 25); placeclass.setBounds(30, 90, 80, 25); register.setBounds(110, 120, 80, 25); register.addActionListener(new ActionListener() { //增加事件监听器 @Override public void actionPerformed(ActionEvent arg0) { // TODO Auto-generated method stub if(!judgeText("data", addclasstext.getText())&&judgeText("data", teachertext.getText())&&judgeText("data", placeclasstext.getText().substring(0, 2))) { inputFile("data",addclasstext); inputFile("Xclass",addclasstext); inputFile("Xclass",teachertext); inputFile("Xclass",placeclasstext); new MyJf(str2); } else new MyJf(str1); } }); addclasstext.setBounds(105, 30, 165, 25); teachertext.setBounds(105, 60, 165, 25); placeclasstext.setBounds(105, 90, 165, 25); panel.add(addclass); panel.add(addclasstext); panel.add(teacher); panel.add(teachertext); panel.add(register); panel.add(placeclass); panel.add(placeclasstext); } SetClass() { //为JFrame窗口设置窗口参数 // TODO Auto-generated constructor stub jf.setSize(340, 250); jf.setLocationRelativeTo(null); jf.add(panel); setPanel(panel); jf.setVisible(true); jf.setDefaultCloseOperation(3); } public static void main(String[] args) { // TODO Auto-generated method stub new SetClass(); } } class MyJf //创建弹出窗口 { JFrame jf1=new JFrame("提示信息"); JPanel jp1=new JPanel(); JLabel jl=new JLabel(); MyJf(String str) { jl.setText(str); jf1.setSize(300, 80); jf1.setVisible(true); jf1.add(jp1); jf1.setDefaultCloseOperation(2); jf1.setLocationRelativeTo(null); jp1.add(jl); } }
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