don don don

www.ascpn.com

nish

www.nishant kumar.in

shyam singh bihar

parth singh patna

nishant kumar

amit kumar iwp

amit kumar iwp

my name amit kumar and studen of jetking i do the work in iwp delhi in vikash puri 

java ascpn

01	import java.awt.*;

002	import javax.swing.*;

003	import java.awt.event.*;

004

005	public class Calculator extends JFrame implements ActionListener {

006

007	JPanel[] row = new JPanel[5];

008	JButton[] button = new JButton[19];

009	String[] buttonString = {"7", "8", "9", "+",

010	"4", "5", "6", "-",

011	"1", "2", "3", "*",

012	".", "/", "C", "√",

013	"+/-", "=", "0"};

014	int[] dimW = {300,45,100,90};

015	int[] dimH = {35, 40};

016	Dimension displayDimension = new Dimension(dimW[0], dimH[0]);

017	Dimension regularDimension = new Dimension(dimW[1], dimH[1]);

018	Dimension rColumnDimension = new Dimension(dimW[2], dimH[1]);

019	Dimension zeroButDimension = new Dimension(dimW[3], dimH[1]);

020	boolean[] function = new boolean[4];

021	double[] temporary = {0, 0};

022	JTextArea display = new JTextArea(1,20);

023	Font font = new Font("Times new Roman", Font.BOLD, 14);

024

025	Calculator() {

026	super("Calculator");

027	setDesign();

028	setSize(380, 250);

029	setResizable(false);

030	setDefaultCloseOperation(EXIT_ON_CLOSE);

031	GridLayout grid = new GridLayout(5,5);

032	setLayout(grid);

033

034	for(int i = 0; i < 4; i++)

035	function[i] = false;

036

037	FlowLayout f1 = new FlowLayout(FlowLayout.CENTER);

038	FlowLayout f2 = new FlowLayout(FlowLayout.CENTER,1,1);

039	for(int i = 0; i < 5; i++)

040	row[i] = new JPanel();

041	row[0].setLayout(f1);

042	for(int i = 1; i < 5; i++)

043	row[i].setLayout(f2);

044

045	for(int i = 0; i < 19; i++) {

046	button[i] = new JButton();

047	button[i].setText(buttonString[i]);

048	button[i].setFont(font);

049	button[i].addActionListener(this);

050

}

051

052	display.setFont(font);

053	display.setEditable(false);

054	display.setComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT);

055	display.setPreferredSize(displayDimension);

056	for(int i = 0; i < 14; i++)

057	button[i].setPreferredSize(regularDimension);

058	for(int i = 14; i < 18; i++)

059	button[i].setPreferredSize(rColumnDimension);

060	button[18].setPreferredSize(zeroButDimension);

061

062	row[0].add(display);

063	add(row[0]);

064

065	for(int i = 0; i < 4; i++)

066	row[1].add(button[i]);

067	row[1].add(button[14]);

068	add(row[1]);

069

070	for(int i = 4; i < 8; i++)

071	row[2].add(button[i]);

072	row[2].add(button[15]);

073	add(row[2]);

074

075	for(int i = 8; i < 12; i++)

076	row[3].add(button[i]);

077	row[3].add(button[16]);

078	add(row[3]);

079

080	row[4].add(button[18]);

081	for(int i = 12; i < 14; i++)

082	row[4].add(button[i]);

083	row[4].add(button[17]);

084	add(row[4]);

085

086	setVisible(true);

087

}

088

089	public void clear() {

090

try {

091	display.setText("");

092	for(int i = 0; i < 4; i++)

093	function[i] = false;

094	for(int i = 0; i < 2; i++)

095	temporary[i] = 0;

096	} catch(NullPointerException e) {

097

}

098

}

099

100	public void getSqrt() {

101

try {

102	double value = Math.sqrt(Double.parseDouble(display.getText()));

103	display.setText(Double.toString(value));

104	} catch(NumberFormatException e) {

105

}

106

}

107

108	public void getPosNeg() {

109

try {

110	double value = Double.parseDouble(display.getText());

111	if(value != 0) {

112	value = value * (-1);

113	display.setText(Double.toString(value));

114

}

115

else {

116

}

117	} catch(NumberFormatException e) {

118

}

119

}

120

121	public void getResult() {

122	double result = 0;

123	temporary[1] = Double.parseDouble(display.getText());

124	String temp0 = Double.toString(temporary[0]);

125	String temp1 = Double.toString(temporary[1]);

126

try {

127	if(temp0.contains("-")) {

128	String[] temp00 = temp0.split("-", 2);

129	temporary[0] = (Double.parseDouble(temp00[1]) * -1);

130

}

131	if(temp1.contains("-")) {

132	String[] temp11 = temp1.split("-", 2);

133	temporary[1] = (Double.parseDouble(temp11[1]) * -1);

134

}

135	} catch(ArrayIndexOutOfBoundsException e) {

136

}

137

try {

138	if(function[2] == true)

139	result = temporary[0] * temporary[1];

140	else if(function[3] == true)

141	result = temporary[0] / temporary[1];

142	else if(function[0] == true)

143	result = temporary[0] + temporary[1];

144	else if(function[1] == true)

145	result = temporary[0] - temporary[1];

146	display.setText(Double.toString(result));

147	for(int i = 0; i < 4; i++)

148	function[i] = false;

149	} catch(NumberFormatException e) {

150

}

151

}

152

153	public final void setDesign() {

154

try {

155	UIManager.setLookAndFeel(

156	"com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel");

157	} catch(Exception e) {

158

}

159

}

160

161

@Override

162	public void actionPerformed(ActionEvent ae) {

163	if(ae.getSource() == button[0])

164	display.append("7");

165	if(ae.getSource() == button[1])

166	display.append("8");

167	if(ae.getSource() == button[2])

168	display.append("9");

169	if(ae.getSource() == button[3]) {

170	//add function[0]

171	temporary[0] = Double.parseDouble(display.getText());

172	function[0] = true;

173	display.setText("");

174

}

175	if(ae.getSource() == button[4])

176	display.append("4");

177	if(ae.getSource() == button[5])

178	display.append("5");

179	if(ae.getSource() == button[6])

180	display.append("6");

181	if(ae.getSource() == button[7]) {

182	//subtract function[1]

183	temporary[0] = Double.parseDouble(display.getText());

184	function[1] = true;

185	display.setText("");

186

}

187	if(ae.getSource() == button[8])

188	display.append("1");

189	if(ae.getSource() == button[9])

190	display.append("2");

191	if(ae.getSource() == button[10])

192	display.append("3");

193	if(ae.getSource() == button[11]) {

194	//multiply function[2]

195	temporary[0] = Double.parseDouble(display.getText());

196	function[2] = true;

197	display.setText("");

198

}

199	if(ae.getSource() == button[12])

200	display.append(".");

201	if(ae.getSource() == button[13]) {

202	//divide function[3]

203	temporary[0] = Double.parseDouble(display.getText());

204	function[3] = true;

205	display.setText("");

206

}

207	if(ae.getSource() == button[14])

208

clear();

209	if(ae.getSource() == button[15])

210	getSqrt();

211	if(ae.getSource() == button[16])

212	getPosNeg();

213	if(ae.getSource() == button[17])

214	getResult();

215	if(ae.getSource() == button[18])

216	display.append("0");

217

}

218

219	public static void main(String[] arguments) {

220	Calculator c = new Calculator();

221

}

222

}