Skip to content

Commit 60de120

Browse files
author
codehouseindia
authored
Merge pull request codehouseindia#98 from mishra-ayushknp/patch-1
Create calculator
2 parents 9c54a21 + ba37381 commit 60de120

1 file changed

Lines changed: 263 additions & 0 deletions

File tree

‎calculator‎

Lines changed: 263 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,263 @@
1+
import javax.swing.*;
2+
import java.awt.*;
3+
import java.awt.event.*;
4+
import javax.swing.BorderFactory;
5+
import javax.swing.border.Border;
6+
public class calculator implements ActionListener
7+
{
8+
JFrame frame = new JFrame();
9+
JPanel panel = new JPanel();
10+
JTextArea textarea = new JTextArea(2,10);
11+
JButton b1 = new JButton("1");
12+
JButton b2 = new JButton("2");
13+
JButton b3 = new JButton("3");
14+
JButton b4 = new JButton("4");
15+
JButton b5 = new JButton("5");
16+
JButton b6 = new JButton("6");
17+
JButton b7 = new JButton("7");
18+
JButton b8 = new JButton("8");
19+
JButton b9 = new JButton("9");
20+
JButton b0 = new JButton("0");
21+
JButton badd = new JButton("+");
22+
JButton bsub = new JButton("-");
23+
JButton bmul = new JButton("*");
24+
JButton bdiv = new JButton("/");
25+
JButton bequal = new JButton("=");
26+
JButton bclear = new JButton("C");
27+
JButton bdot = new JButton(".");
28+
double n1 , n2 , result ;
29+
int addc = 0;
30+
int subc =0;
31+
int mulc = 0;
32+
int divc =0;
33+
public calculator()
34+
{
35+
frame.setSize(340,450);
36+
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
37+
frame.setVisible(true);
38+
frame.setTitle("FIRST PROJECT");
39+
frame.add(panel);
40+
frame.setBackground(Color.BLUE);
41+
Border border = BorderFactory.createLineBorder(Color.BLACK);
42+
panel.add(textarea);
43+
textarea.setBackground(Color.WHITE);
44+
textarea.setBorder(border);
45+
Font f = new Font("arial",Font.BOLD,33);
46+
textarea.setFont(f);
47+
textarea.setBackground(Color.WHITE);
48+
textarea.setForeground(Color.BLACK);
49+
textarea.setPreferredSize(new Dimension(2,10));
50+
textarea.setLineWrap(true);
51+
b7.setPreferredSize(new Dimension(100,40));
52+
b8.setPreferredSize(new Dimension(100,40));
53+
b9.setPreferredSize(new Dimension(100,40));
54+
b4.setPreferredSize(new Dimension(100,40));
55+
b5.setPreferredSize(new Dimension(100,40));
56+
b6.setPreferredSize(new Dimension(100,40));
57+
b1.setPreferredSize(new Dimension(100,40));
58+
b2.setPreferredSize(new Dimension(100,40));
59+
b3.setPreferredSize(new Dimension(100,40));
60+
b0.setPreferredSize(new Dimension(100,40));
61+
badd.setPreferredSize(new Dimension(100,40));
62+
bsub.setPreferredSize(new Dimension(100,40));
63+
bmul.setPreferredSize(new Dimension(100,40));
64+
bdiv.setPreferredSize(new Dimension(100,40));
65+
bdot.setPreferredSize(new Dimension(150,40));
66+
bclear.setPreferredSize(new Dimension(100,40));
67+
bequal.setPreferredSize(new Dimension(150,40));
68+
panel.setBackground(Color.PINK);
69+
panel.add(b7);
70+
panel.add(b8);
71+
panel.add(b9);
72+
panel.add(b4);
73+
panel.add(b5);
74+
panel.add(b6);
75+
panel.add(b1);
76+
panel.add(b2);
77+
panel.add(b3);
78+
panel.add(b0);
79+
panel.add(badd);
80+
panel.add(bsub);
81+
panel.add(bmul);
82+
panel.add(bdiv);
83+
panel.add(bclear);
84+
panel.add(bequal);
85+
panel.add(bdot);
86+
b0.setBackground(Color.BLACK);
87+
b1.setBackground(Color.BLACK);
88+
b2.setBackground(Color.BLACK);
89+
b3.setBackground(Color.BLACK);
90+
b4.setBackground(Color.BLACK);
91+
b5.setBackground(Color.BLACK);
92+
b6.setBackground(Color.BLACK);
93+
b7.setBackground(Color.BLACK);
94+
b8.setBackground(Color.BLACK);
95+
b9.setBackground(Color.BLACK);
96+
badd.setBackground(Color.BLACK);
97+
bsub.setBackground(Color.BLACK);
98+
bmul.setBackground(Color.BLACK);
99+
bdiv.setBackground(Color.BLACK);
100+
bequal.setBackground(Color.BLACK);
101+
bdot.setBackground(Color.BLACK);
102+
bclear.setBackground(Color.BLACK);
103+
b0.setForeground(Color.WHITE);
104+
b1.setForeground(Color.WHITE);
105+
b2.setForeground(Color.WHITE);
106+
b3.setForeground(Color.WHITE);
107+
b4.setForeground(Color.WHITE);
108+
b5.setForeground(Color.WHITE);
109+
b6.setForeground(Color.WHITE);
110+
b7.setForeground(Color.WHITE);
111+
b8.setForeground(Color.WHITE);
112+
b9.setForeground(Color.WHITE);
113+
bequal.setForeground(Color.WHITE);
114+
badd.setForeground(Color.WHITE);
115+
bsub.setForeground(Color.WHITE);
116+
bdiv.setForeground(Color.WHITE);
117+
bmul.setForeground(Color.WHITE);
118+
bclear.setForeground(Color.WHITE);
119+
bdot.setForeground(Color.WHITE);
120+
b1.addActionListener((ActionListener)this);
121+
b0.addActionListener((ActionListener)this);
122+
b2.addActionListener((ActionListener)this);
123+
b3.addActionListener((ActionListener)this);
124+
b4.addActionListener((ActionListener)this);
125+
b5.addActionListener((ActionListener)this);
126+
b6.addActionListener((ActionListener)this);
127+
b7.addActionListener((ActionListener)this);
128+
b8.addActionListener((ActionListener)this);
129+
b9.addActionListener((ActionListener)this);
130+
badd.addActionListener((ActionListener)this);
131+
bsub.addActionListener((ActionListener)this);
132+
bmul.addActionListener((ActionListener)this);
133+
bdiv.addActionListener((ActionListener)this);
134+
bclear.addActionListener((ActionListener)this);
135+
bequal.addActionListener((ActionListener)this);
136+
bdot.addActionListener((ActionListener)this);
137+
}
138+
public void actionPerformed(ActionEvent e)
139+
{
140+
if(e.getSource()==bclear)
141+
{
142+
n1 = 0.0;
143+
n2 = 0.0;
144+
textarea.setText("");
145+
}
146+
if(e.getSource()==b1)
147+
{
148+
textarea.append("1");
149+
}
150+
if(e.getSource()==b2)
151+
{
152+
textarea.append("2");
153+
}
154+
if(e.getSource()==b0)
155+
{
156+
textarea.append("0");
157+
}
158+
if(e.getSource()==b3)
159+
{
160+
textarea.append("3");
161+
}
162+
if(e.getSource()==b4)
163+
{
164+
textarea.append("4");
165+
}
166+
if(e.getSource()==b5)
167+
{
168+
textarea.append("5");
169+
}
170+
if(e.getSource()==b6)
171+
{
172+
textarea.append("6");
173+
}
174+
if(e.getSource()==b7)
175+
{
176+
textarea.append("7");
177+
}
178+
if(e.getSource()==b8)
179+
{
180+
textarea.append("8");
181+
}
182+
if(e.getSource()==b9)
183+
{
184+
textarea.append("9");
185+
}
186+
if(e.getSource()==bdot)
187+
{
188+
189+
textarea.append(".");
190+
}
191+
if(e.getSource()==badd)
192+
{
193+
n1 = number();
194+
textarea.setText("");
195+
addc = 1;
196+
subc = 0;
197+
mulc = 0;
198+
divc = 0;
199+
}
200+
if(e.getSource()==bsub)
201+
{
202+
n1 = number();
203+
textarea.setText("");
204+
addc = 0;
205+
subc = 1;
206+
mulc = 0;
207+
divc = 0;
208+
}
209+
if(e.getSource()==bmul)
210+
{
211+
n1 = number();
212+
textarea.setText("");
213+
addc = 0;
214+
subc = 0;
215+
mulc = 1;
216+
divc = 0;
217+
}
218+
if(e.getSource()==bdiv)
219+
{
220+
n1 = number();
221+
textarea.setText("");
222+
addc = 0;
223+
subc = 0;
224+
mulc = 0;
225+
divc = 1;
226+
}
227+
228+
229+
if(e.getSource()==bequal)
230+
{
231+
n2 = number();
232+
if(addc > 0)
233+
{
234+
result = n1+n2;
235+
textarea.setText(Double.toString(result));
236+
}
237+
if(subc > 0)
238+
{
239+
result = n1-n2;
240+
textarea.setText(Double.toString(result));
241+
}
242+
if(mulc > 0)
243+
{
244+
result = n1*n2;
245+
textarea.setText(Double.toString(result));
246+
}
247+
if(divc > 0)
248+
{
249+
result = n1/n2;
250+
textarea.setText(Double.toString(result));
251+
}
252+
}
253+
}
254+
255+
public double number()
256+
{
257+
double n1 = 0.0;
258+
String s;
259+
s = textarea.getText();
260+
n1 = Double.valueOf(s);
261+
return n1;
262+
}
263+
}

0 commit comments

Comments
 (0)