xsjbcjdl.java

采用Eclipse开发的学生成绩管理系统,可以添加班级,人员,数据没有采用数据库,后台采用文本文件的形式存储,可以很方便的改为数据库.

package vi;
import file.*;
import javax.swing.JPanel;
import javax.swing.JFrame;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JTextField;
import java.awt.*;
import java.awt.event.*;
import java.text.*;
public class Xsjbcjdl extends JFrame implements ActionListener {

	private JPanel jContentPane = null;
	private JButton save = null;
	private JButton cancel = null;
	private JButton back = null;
	private JLabel bjbh = null;
	private JLabel scbh = null;
	private JLabel xsxm = null;
	private JLabel chinese = null;
	private JLabel math = null;
	private JLabel english = null;
	private JTextField inputCNO = null;
	private JTextField inputSNO = null;
	private JTextField inputSName = null;
	private JTextField inputChinese = null;
	private JTextField inputEnglish = null;
	private JTextField inputMath = null;
	private JButton delect = null;
	/**
	 * This is the default constructor
	 */
	public Xsjbcjdl() {
		super();
		initialize();
	}

	/**
	 * This method initializes this
	 * 
	 * @return void
	 */
	private void initialize() {
		this.setContentPane(getJContentPane());
		this.setTitle("学生基本信息登录");
		this.setBounds(new java.awt.Rectangle(300,250,349,258));
		this.setVisible(true);
		save.addActionListener( this);
		cancel.addActionListener( this);
		delect.addActionListener( this);
		back.addActionListener( this);
	}

	/**
	 * This method initializes jContentPane
	 * 
	 * @return javax.swing.JPanel
	 */
	private JPanel getJContentPane() {
		if (jContentPane == null) {
			english = new JLabel();
			english.setBounds(new java.awt.Rectangle(24,152,83,22));
			english.setText("外语成绩");
			math = new JLabel();
			math.setBounds(new java.awt.Rectangle(24,123,83,22));
			math.setText("数学成绩");
			chinese = new JLabel();
			chinese.setBounds(new java.awt.Rectangle(24,94,83,22));
			chinese.setText("语文成绩");
			xsxm = new JLabel();
			xsxm.setBounds(new java.awt.Rectangle(24,66,83,22));
			xsxm.setText("学生姓名");
			scbh = new JLabel();
			scbh.setBounds(new java.awt.Rectangle(24,38,83,22));
			scbh.setText("学生编号");
			bjbh = new JLabel();
			bjbh.setBounds(new java.awt.Rectangle(24,10,83,22));
			bjbh.setText("班级编号");
			jContentPane = new JPanel();
			jContentPane.setLayout(null);
			jContentPane.add(getSave(), null);
			jContentPane.add(getCancel(), null);
			jContentPane.add(getBack(), null);
			jContentPane.add(bjbh, null);
			jContentPane.add(scbh, null);
			jContentPane.add(xsxm, null);
			jContentPane.add(chinese, null);
			jContentPane.add(math, null);
			jContentPane.add(english, null);
			jContentPane.add(getInputCNO(), null);
			jContentPane.add(getInputSNO(), null);
			jContentPane.add(getInputSName(), null);
			jContentPane.add(getInputChinese(), null);
			jContentPane.add(getInputEnglish(), null);
			jContentPane.add(getInputMath(), null);
			jContentPane.add(getDelect(), null);
		}
		return jContentPane;
	}

	/**
	 * This method initializes save	
	 * 	
	 * @return javax.swing.JButton	
	 */
	private JButton getSave() {
		if (save == null) {
			save = new JButton();
			save.setBounds(new java.awt.Rectangle(16,182,65,33));
			save.setText("保存");
		}
		return save;
	}

	/**
	 * This method initializes cancel	
	 * 	
	 * @return javax.swing.JButton	
	 */
	private JButton getCancel() {
		if (cancel == null) {
			cancel = new JButton();
			cancel.setBounds(new java.awt.Rectangle(97,182,65,33));
			cancel.setText("取消");
		}
		return cancel;
	}

	/**
	 * This method initializes back	
	 * 	
	 * @return javax.swing.JButton	
	 */
	private JButton getBack() {
		if (back == null) {
			back = new JButton();
			back.setBounds(new java.awt.Rectangle(259,182,65,33));
			back.setText("返回");
		}
		return back;
	}

	/**
	 * This method initializes inputCNO	
	 * 	
	 * @return javax.swing.JTextField	
	 */
	private JTextField getInputCNO() {
		if (inputCNO == null) {
			inputCNO = new JTextField();
			inputCNO.setBounds(new java.awt.Rectangle(129,10,83,22));
		}
		return inputCNO;
	}

	/**
	 * This method initializes inputSNO	
	 * 	
	 * @return javax.swing.JTextField	
	 */
	private JTextField getInputSNO() {
		if (inputSNO == null) {
			inputSNO = new JTextField();
			inputSNO.setBounds(new java.awt.Rectangle(129,38,83,22));
		}
		return inputSNO;
	}

	/**
	 * This method initializes inputSName	
	 * 	
	 * @return javax.swing.JTextField	
	 */
	private JTextField getInputSName() {
		if (inputSName == null) {
			inputSName = new JTextField();
			inputSName.setBounds(new java.awt.Rectangle(129,66,83,22));
		}
		return inputSName;
	}

	/**
	 * This method initializes inputChinese	
	 * 	
	 * @return javax.swing.JTextField	
	 */
	private JTextField getInputChinese() {
		if (inputChinese == null) {
			inputChinese = new JTextField();
			inputChinese.setBounds(new java.awt.Rectangle(129,94,83,22));
		}
		return inputChinese;
	}

	/**
	 * This method initializes inputEnglish	
	 * 	
	 * @return javax.swing.JTextField	
	 */
	private JTextField getInputEnglish() {
		if (inputEnglish == null) {
			inputEnglish = new JTextField();
			inputEnglish.setBounds(new java.awt.Rectangle(129,152,83,22));
		}
		return inputEnglish;
	}

	/**
	 * This method initializes inputMath	
	 * 	
	 * @return javax.swing.JTextField	
	 */
	private JTextField getInputMath() {
		if (inputMath == null) {
			inputMath = new JTextField();
			inputMath.setBounds(new java.awt.Rectangle(129,123,83,22));
		}
		return inputMath;
	}

	/**
	 * This method initializes delect	
	 * 	
	 * @return javax.swing.JButton	
	 */
	private JButton getDelect() {
		if (delect == null) {
			delect = new JButton();
			delect.setBounds(new java.awt.Rectangle(178,182,65,33));
			delect.setText("删除");
		}
		return delect;
	}
	public void actionPerformed(ActionEvent e){

		if(e.getSource() ==save){


			float avg=(Float.parseFloat( inputChinese.getText()) +Float.parseFloat( inputMath.getText())+
			Float.parseFloat( inputEnglish.getText() ))/3;
			NumberFormat f=NumberFormat.getInstance() ;
			f.setMaximumIntegerDigits( 3);
			f.setMaximumFractionDigits( 2);
			String avgS=f.format( avg);
			String s=inputCNO.getText()+inputSNO.getText() +"|"+inputSName.getText() +"||"+inputChinese.getText()+"|||"
			+inputMath.getText()+"||||" +inputEnglish.getText()+"|||||"+avgS ;
			LineRW lrw=new LineRW();
		try{	lrw.write( s);
		}
		catch(Exception ee){
			System.out.println(ee);
		}
		}
		
		if(e.getSource() ==cancel){
			inputCNO.setText( "");
			inputSNO.setText( "");
			inputSName.setText("");
			inputChinese.setText( "");
			inputMath.setText( "");
			inputEnglish.setText("");
		}
		if(e.getSource() ==delect){
			LineRW lrw=new LineRW();
			lrw.delect(inputCNO.getText() ,inputSNO.getText()  );
		}
		if(e.getSource() ==back){
			this.dispose() ;
			Main main=new Main();
		}
	}

}  //  @jve:decl-index=0:visual-constraint="324,-46"