1: /**
2: *
3: * @author Hariraj
4: */
5: import java.applet.Applet;
6: import java.awt.*;
7: import java.awt.event.*;
8:
9: public class magic2 extends Applet implements ActionListener { 10:
11: Panel rules=new Panel(new GridLayout(5,1));
12: Panel magic=new Panel(new GridLayout(3,3));
13: Panel bottomp=new Panel(new GridLayout(2,1));
14: Panel nos =new Panel(new GridLayout(3,3));
15: TextField [] input = new TextField[10];
16: Label rule=new Label("What is a Magic Square?"); 17: Label rule2=new Label( "A magic square of order n is an arrangement of n^2 numbers,usually distinct");
18: Label rule3=new Label("integers, in a square, such that the n numbers in all rows, all columns, "); 19: Label rule4=new Label("and both diagonals sum to the same constant."); 20: Label result=new Label();
21: Button reset=new Button("Reset"); 22: Button[] no=new Button[9];
23:
24: public void init() { 25: this.setSize(440, 440);
26: this.setLayout(new BorderLayout());
27: this.add(rules,BorderLayout.NORTH);
28: this.add(magic,BorderLayout.CENTER);
29: bottomp.add(nos);
30: bottomp.add(reset);
31: reset.setBackground(Color.pink);
32: this.add(bottomp,BorderLayout.SOUTH);
33: rules.add(result);
34: rule.setBackground(Color.LIGHT_GRAY);
35: rules.add(rule);
36: rules.add(rule2);
37: rules.add(rule3);
38: rules.add(rule4);
39: result.setBackground(Color.yellow);
40: result.setText("WELCOME!!! Click the numbers to begin"); 41: for(int i=0;i<9;i++)
42: { 43: magic.add(no[i]=new Button());
44: no[i].setLabel(""+(i+1)); 45: no[i].setBackground(Color.lightGray);
46: nos.add(no[i]);
47: no[i].addActionListener(this);
48: magic.add(input[i]=new TextField("",1)); 49: input[i].setEditable(false);
50: }reset.addActionListener(this);
51: }
52: int g=0;
53:
54: public void actionPerformed(ActionEvent e) { 55:
56: if(e.getSource().equals(reset)){ 57: for(int i=0;i<9;i++)
58: { 59: input[i].setText(""); 60: input[i].setEditable(false);
61: no[i].setEnabled(true);
62: }
63: g=0;
64: result.setBackground(Color.WHITE);
65: result.setText(""); 66: }
67: if(e.getSource().equals(no[0]))
68: { 69: input[g].setText("1"); 70: no[0].setEnabled(false);
71: g++;
72: }
73:
74: if(e.getSource().equals(no[1]))
75: { 76: input[g++].setText("2"); 77: no[1].setEnabled(false);
78:
79: }
80: if(e.getSource().equals(no[2]))
81: { 82: input[g++].setText("3"); 83: no[2].setEnabled(false);
84: }
85: if(e.getSource().equals(no[3]))
86: { 87: input[g++].setText("4"); 88: no[3].setEnabled(false);
89: }
90: if(e.getSource().equals(no[4]))
91: { 92: input[g++].setText("5"); 93: no[4].setEnabled(false);
94: }
95: if(e.getSource().equals(no[5]))
96: { 97: input[g++].setText("6"); 98: no[5].setEnabled(false);
99: }
100: if(e.getSource().equals(no[6]))
101: { 102: input[g++].setText("7"); 103: no[6].setEnabled(false);
104: }
105: if(e.getSource().equals(no[7]))
106: { 107: input[g++].setText("8"); 108: no[7].setEnabled(false);
109: }
110: if(e.getSource().equals(no[8]))
111: { 112: input[g++].setText("9"); 113: no[8].setEnabled(false);
114: }
115: if(g<9){ 116: result.setBackground(Color.yellow);
117: result.setText("Click the remaining " +(9-g)+ " enabled button to see the result"); 118: }
119: if(g==9){ 120: int r1=Integer.parseInt(input[0].getText())+Integer.parseInt(input[1].getText())+Integer.parseInt(input[2].getText());
121: int r2=Integer.parseInt(input[3].getText())+Integer.parseInt(input[4].getText())+Integer.parseInt(input[5].getText());
122: int r3=Integer.parseInt(input[6].getText())+Integer.parseInt(input[7].getText())+Integer.parseInt(input[8].getText());
123: int d1=Integer.parseInt(input[0].getText())+Integer.parseInt(input[4].getText())+Integer.parseInt(input[8].getText());
124: int d2=Integer.parseInt(input[2].getText())+Integer.parseInt(input[4].getText())+Integer.parseInt(input[6].getText());
125:
126: if((r1==r2)&&(r1==r3)&&(r1==d1)&&(r1==d2))
127: { 128: result.setBackground(Color.GREEN);
129: result.setText(" CONGRATS!!! IT'S A MAGIC SQUARE"); 130:
131: }else { result.setBackground(Color.red); 132: result.setText(" NOT A MAGIC SQUARE!!! Try Again :-("); 133:
134: }
135: }
136: }
137: }
