Four arithmetic simulation software in Java

Code:

1. Import java. Applet .*;
2. Import java. AWT .*;
3. Import java. AWT. event .*;
5. Public class game extends applet implements actionlistener {
6. // Define variables
7. Int num1, num2, num3, jieguo, jilu, error = 0, Right = 0, key = 0;
8. Char op;
9. Float percent = 0;
10. String res, lev;
11. Image labmag;
12. Audioclip audio1, audio2;
13. Label prompt1, prompt2;
14. Textfield QUS, ANS, Info;
15. Button next, enter, record;
16. Public void Init ()
17. {
18. // Initialize the image
19. Labmag = getimage (getcodebase (), "1.jpg ");
20. // Initialize music
21. Audio1 = getaudioclip (getdocumentbase (), "error. Au ");
22. Audio2 = getaudioclip (getdocumentbase (), "Right. Au ");
23. QUS = new textfield (15 );
24. // Initialization button, text box
25. Ans = new textfield (10 );
26. Info = new textfield (30 );
27. Enter = new button ("OK ");
28. Next = new button ("new question ");
29. Record = new button ("record ");
30. Prompt1 = new label ("question :");
31. Prompt2 = new label ("Result :");
32. // Create button and text box
33. Add (prompt1 );
34. Add (QUS );
35. Add (ANS );
36. Add (enter );
37. Add (next );
38. Add (record );
39. Add (prompt2 );
40. Add (Info );
41. // Listen to the three buttons
42. Next. addactionlistener (this );
43. Enter. addactionlistener (this );
44. Record. addactionlistener (this );
45. }
46. Public void paint (Graphics g)
47. {
48. // Drawing
49. G. drawimage (labmag, 0, 0, 430,280, this );
50. }
51. Public void actionreceivmed (actionevent E)
52. {
53. If (E. getsource () = NEXT)
54. {
55. // Random Number Generation
56. Num1 = (INT) (math. Random () * 9 );
57. Num2 = (INT) (math. Random () * 9 );
58. Num3 = (INT) (math. Random () * 3 );
59. Switch (num3)
60. {
61. Case 0: op = '+'; jilu = num1 + num2; break;
62. Case 1: op = '-'; jilu = num1-num2; break;
63. Case 2: op = '*'; jilu = num1 * num2; break;
64. }
65. // Considering the decimal point problem caused by integer division, Division generation is temporarily canceled.
66. QUS. settext ("" + num1 + OP + num2 + "= ");
67. Key = 1;
68. }
69. If (E. getsource () = enter)
70. {
71. If (ANS. gettext ()! = "")
72. Jieguo = integer. parseint (ANS. gettext ());
73. If (jieguo = jilu)
74. {
75. Res = "awesome, correct! ";
76. Audio2.play (); // play music
77. If (Key = 1) // only one point is recorded
78. {
79. Right ++;
80. Key = 0;
81. }
82. }
83. Else
84. {
85. Res = "incorrect. Don't be discouraged! ";
86. Audio1.play (); // play music
87. Error ++; // points are deducted if an error is returned.
88. }
89. Info. settext ("" + Res );
90. }
92. If (E. getsource () = record)
93. {
94. // Level Determination
95. If (Right> 0 & right <= 10)
96. Ev = "lazy goat ";
97. If (Right> 10 & right <= 23)
98. Ev = "warm goat ";
99. If (Right> 23 & right <= 38)
100. Ev = "Boiling goat ";
101. If (Right> 38 & right <= 56)
102. Ev = "meiyang ";
103. If (Right> 56 & right <= 76)
104. Ev = "Xi mianmian ";
105. If (Right> 76 & right <= 100)
106. Ev = "soft ";
107. If (Right> 100)
108. Ev = "Tian Shen ";
109. Info. settext ("correct" + right + "Question" + "wrong" + error + "Question" + "grade:" + lev.com );
110. }
111. }
112. }