1 import java.awt.Color; 2 import java.awt.Container; 3 import java.awt.FlowLayout; 4 import java.awt.event.ActionEvent; 5 import java.awt.event.ActionListener; 6 import java.io.FileWriter; 7 import java.io.IOException; 8 9 import javax.swing.*; 10 11 public class Test extends JFrame{ 12 int i=0; 13 String arr[][]=newString [30] [. 3 ]; 14 15 the JLabel La = new new the JLabel ( "course name" ); 16 the JLabel LB = new new the JLabel ( "teachers" ); . 17 the JLabel LC = new new the JLabel ( "Venue" ); 18 is the JTextField = JT1 new new the JTextField (15 ); . 19 the JTextField = JT2 new new the JTextField (15 ); 20 is the JTextField JT3 = new new the JTextField (15 ); 21 is 22 is the JButton JB1 = new new the JButton ( "entry" ); 23 is the JButton JB2 =new JButton("退出"); 24 25 public Test() { 26 setDefaultCloseOperation(EXIT_ON_CLOSE); 27 setTitle("课程信息录入"); 28 setBounds(580, 250, 320, 250); 29 setResizable(false); 30 31 Container c=getContentPane(); 32 c.add(la); 33 c.add(lb); 34 c.add(lc); 35 c.add(jt1); 36 c.add(jt2); 37 c.add(jt3); 38 c.add(jb1); 39 c.add(jb2); 40 41 la.setBounds(20,40,50,18); 42 lb.setBounds(20,80,50,18); 43 lc.setBounds(20, 120, 50, 18); 44 jt1.setBounds(70,40,200,18); 45 jt2.setBounds(70,80,200,18); 46 jt3.setBounds(70,120,200,18); 47 jb1.setBounds(40, 160, 80, 20); 48 jb2.setBounds(170, 160, 80, 20); 49 c.setLayout(null); 50 c .setBackground(Color.white); 51 setVisible(true); 52 } 53 void information() { 54 jb1.addActionListener(new ActionListener() {//录入按钮 55 public void actionPerformed(ActionEvent e) { 56 boolean flag1=true; 57 boolean flag2=true; 58 boolean flag3=true; 59 for(int j=0;j<i;j++) { 60 IF (. jt1.getText () the equals (ARR [J] [0])) { // Analyzing unique program 61 is FLAG1 = to false ; 62 is BREAK ; 63 is } 64 // Analyzing the teacher's name 65 IF (jt2.getText ()! .equals ( "Wang") &&! jt2.getText (). equals ( " Liu Lijia") &&! jt2.getText (). equals ( " Dan") &&! jt2.getText (). equals ( " Wang Hui" !) && jt2.getText () equals ( " Yang Zaiguang." )) 66 { 67 FLAG2 = to false ; 68 BREAK ; 69 } 70 // Analyzing Venue 71 if(jt3.getText().charAt(0)!='一'&&jt3.getText().charAt(0)!='二'&&jt3.getText().charAt(0)!='三'&&jt3.getText().charAt(0)!='基') { 72 flag3=false; 73 break; 74 } 75 if(jt3.getText().charAt(1)!='教') { 76 flag3=false; 77 break; 78 } 79 80 } 81 if(flag1&&flag2&&flag3) { 82 arr[i][0]=jt1.getText(); 83 arr[i][1]=jt2.getText(); 84 arr[i][2]=jt3.getText(); 85 i++; 86 JDialog jd=new JDialog(); 87 jd.setVisible(true); 88 jd.setBounds(650, 360, 100, 60); 89 Container c=jd.getContentPane(); 90 c.add(new JLabel("录入成功")); 91 is } 92 the else // error prompt window, 93 { 94 IF (! FLAG1) { 95 the JDialog JD = new new the JDialog (); 96 jd.setVisible ( to true ); 97 jd.setBounds (650, 360, 100, 60 ); 98 Container C = jd.getContentPane (); 99 c.add ( new new the JLabel ( "entry course repeat" )); 100 } 101 IF (! FLAG2) { 102 the JDialog JD = new new the JDialog (); 103 jd.setVisible ( to true ); 104 jd.setBounds (650, 360, 100, 60 ); 105 Container C = jd.getContentPane (); 106 C .add ( new new the JLabel ( "teacher's name input error" )); 107 } 108 IF (! Flag3) { 109 the JDialog JD = new new the JDialog (); 110 jd.setVisible ( to true ); 111 jd.setBounds (650, 360, 100, 60 ); 112 Container C = jd.getContentPane (); 113 c.add ( new new the JLabel ( "entry Venue bad" )); 114 } 115 } 1 16 jt1.setText ( "" ); 117 jt2.setText ( "" ); 1 18 jt3.setText ( "" ); 119 } 120 }); 121 jb2.addActionListener ( new new the ActionListener () { 122 public void the actionPerformed (the ActionEvent E) { 123 fileExport (); 124 } 125 }); 126 } 127 void fileExport () { 128 the try { 129 FileWriter FW = new new FileWriter ( "Temo", to true ); // represents input information does not cover 130. for ( int J = 0; J <I; J ++ ) { 131 is String s = String.valueOf ( "Course name:" + arr [j] [ 0] + " Instructor:" + arr [j] [ 1] + " Venue:" + ARR [J] [2 ]); 132 fw.write (S + "\ n-" ); 133 } 134 fw.close (); 135 } the catch (IOException E) { 136 e.printStackTrace (); 137 } 138 } 139 public static void main (String [] args ) { 140 the Test Test = new new the Test (); 141 is test.information (); 142 test.fileExport (); 143 } 144 }
Run the test results:
