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ANSimport javax.swing.;import java.awt.; import java.awt.ev.pdf

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ANS: import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; public class Frame extends JFrame { private double tn = 0;//here declare the variables private double tn2 = 0; private byte nom = -1; private JTextField jtf; public Frame() { JButton[] bn = new JButton[10]; for ( int i = 9; i >= 0; i--) { bn[i] = new JButton(Integer.toString(i)); } //here declare the buttons JButton eb= new JButton(\"e1\"); JButton cb= new JButton(\"C\"); JButton ab= new JButton(\"+\"); JButton sb= new JButton(\"-\"); JButton mb= new JButton(\"*\"); JButton db= new JButton(\"/\"); JButton ab= new JButton(\"+\"); JButton sb= new JButton(\"-\"); //here to set the size,bg,dimensionals jtf = new JTextField(); jtf.setPreferredSize(new Dimension(180, 30)); jtf.setBackground(Color.BLUE); jtf.setEnabled(false); jtf.setHorizontalAlignment(4); jtf.setDisabledTextColor(Color.GREEN); //here set the layouts JPanel PM = new JPanel(); PM.setLayout(new BoxLayout(PM, BoxLayout.Y_AXIS)); JPanel pt = new JPanel(); pt.setPreferredSize(new Dimension(160, 20)); pt.add(jtf); JPanel pnb = new JPanel(); pnb.setPreferredSize(new Dimension(160, 100)); for(int i = 9; i>=0; i--) { pnb.add(bn[i]); } //here buttons add to panels JPanel pb_nom = new JPanel(); pb_nom.setPreferredSize(new Dimension(160, 35)); pb_nom.add(eb); pb_nom.add(cb); pb_nom.add(mb); pb_nom.add(db); pb_nom.add(ab); pb_nom.add(sb); umo_ji[] pb_action = new umo_ji[10]; for ( int i = 0; i < 10; i++ ) { pb_action[i] = new umo_ji(bn[i]); bn[i].addActionListener(pb_action[i]); } //here perform action buttons eb e1 = new eb(); eb.addActionListener(e1); cb c = new cb(); cb.addActionListener(c); mb e2 = new mb(); mb.addActionListener(e2); db e3 = new db(); db.addActionListener(e3); ab add = new ab(); ab.addActionListener(add); Sub_But subtract = new Sub_But(); sb.addActionListener(subtract); PM.add(pt); PM.add(pnb); PM.add(pb_nom); add(PM); //To set the title and size setTitle(\"Button_Test\"); setSize(180, 290); setLocationByPlatform(true); setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); setVisible(true); } private class umo_ji implements ActionListener { //here implements actionlistener private String c; public umo_ji(JButton a) { this.c = a.text_get(); } public void actionPerformed(ActionEvent e) { if (!jtf.text_get().equals(\"0.0\")) { jtf.text_set(jtf.text_get() + c); } else { jtf.text_set(\"\"); actionPerformed(e); } } } private class eb implements ActionListener { @Override//overide buttons public void actionPerformed(ActionEvent e) { tn2 = Double.parseDouble(jtf.text_get()); if (nom == 0) { jtf.text_set(Double.toString((Math.round((tn / tn2) * 100)) / 100)); } else if (nom == 1) { jtf.text_set(Double.toString(tn * tn2)); } else if (nom == 2) { jtf.text_set(Double.toString(tn2 + tn)); } else if (nom == 3) { jtf.text_set(Double.toString(tn - tn2)); } else { jtf.text_set(String.valueOf(tn)); } tn = Double.parseDouble(jtf.text_get()); } } private class cb implements.

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ANS: import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; public class Frame extends JFrame { private double tn = 0;//here declare the variables private double tn2 = 0; private byte nom = -1; private JTextField jtf; public Frame() { JButton[] bn = new JButton[10]; for ( int i = 9; i >= 0; i--) { bn[i] = new JButton(Integer.toString(i)); } //here declare the buttons JButton eb= new JButton("e1"); JButton cb= new JButton("C"); JButton ab= new JButton("+"); JButton sb= new JButton("-"); JButton mb= new JButton("*"); JButton db= new JButton("/"); JButton ab= new JButton("+"); JButton sb= new JButton("-"); //here to set the size,bg,dimensionals jtf = new JTextField(); jtf.setPreferredSize(new Dimension(180, 30)); jtf.setBackground(Color.BLUE); jtf.setEnabled(false); jtf.setHorizontalAlignment(4); jtf.setDisabledTextColor(Color.GREEN); //here set the layouts JPanel PM = new JPanel(); PM.setLayout(new BoxLayout(PM, BoxLayout.Y_AXIS));
JPanel pt = new JPanel(); pt.setPreferredSize(new Dimension(160, 20)); pt.add(jtf); JPanel pnb = new JPanel(); pnb.setPreferredSize(new Dimension(160, 100)); for(int i = 9; i>=0; i--) { pnb.add(bn[i]); } //here buttons add to panels JPanel pb_nom = new JPanel(); pb_nom.setPreferredSize(new Dimension(160, 35)); pb_nom.add(eb); pb_nom.add(cb); pb_nom.add(mb); pb_nom.add(db); pb_nom.add(ab); pb_nom.add(sb); umo_ji[] pb_action = new umo_ji[10]; for ( int i = 0; i < 10; i++ ) { pb_action[i] = new umo_ji(bn[i]); bn[i].addActionListener(pb_action[i]); } //here perform action buttons eb e1 = new eb(); eb.addActionListener(e1); cb c = new cb(); cb.addActionListener(c); mb e2 = new mb(); mb.addActionListener(e2); db e3 = new db(); db.addActionListener(e3); ab add = new ab(); ab.addActionListener(add); Sub_But subtract = new Sub_But(); sb.addActionListener(subtract); PM.add(pt);
PM.add(pnb); PM.add(pb_nom); add(PM); //To set the title and size setTitle("Button_Test"); setSize(180, 290); setLocationByPlatform(true); setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); setVisible(true); } private class umo_ji implements ActionListener { //here implements actionlistener private String c; public umo_ji(JButton a) { this.c = a.text_get(); } public void actionPerformed(ActionEvent e) { if (!jtf.text_get().equals("0.0")) { jtf.text_set(jtf.text_get() + c); } else { jtf.text_set(""); actionPerformed(e); } } } private class eb implements ActionListener { @Override//overide buttons public void actionPerformed(ActionEvent e) { tn2 = Double.parseDouble(jtf.text_get()); if (nom == 0) { jtf.text_set(Double.toString((Math.round((tn / tn2) * 100)) / 100)); } else if (nom == 1) { jtf.text_set(Double.toString(tn * tn2)); } else if (nom == 2) { jtf.text_set(Double.toString(tn2 + tn)); } else if (nom == 3) {
jtf.text_set(Double.toString(tn - tn2)); } else { jtf.text_set(String.valueOf(tn)); } tn = Double.parseDouble(jtf.text_get()); } } private class cb implements ActionListener { @Override public void actionPerformed(ActionEvent e) { jtf.text_set(""); tn = 0; tn2 = 0; nom = -1; } } private class db implements ActionListener { @Override public void actionPerformed(ActionEvent e) { if (tn == 0) { tn = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } else { tn2 = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } nom = 0; } } private class mb implements ActionListener { @Override public void actionPerformed(ActionEvent e) { if (tn == 0) { tn = Double.parseDouble(jtf.text_get());
jtf.text_set(""); } else { tn2 = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } nom = 1; } } private class ab implements ActionListener { @Override public void actionPerformed(ActionEvent e) { if (tn == 0) { tn = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } else { tn2 = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } nom = 2; } } private class Sub_But implements ActionListener { @Override public void actionPerformed(ActionEvent e) { if (tn == 0) { tn = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } else { tn2 = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } nom = 3; } }
} Solution ANS: import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; public class Frame extends JFrame { private double tn = 0;//here declare the variables private double tn2 = 0; private byte nom = -1; private JTextField jtf; public Frame() { JButton[] bn = new JButton[10]; for ( int i = 9; i >= 0; i--) { bn[i] = new JButton(Integer.toString(i)); } //here declare the buttons JButton eb= new JButton("e1"); JButton cb= new JButton("C"); JButton ab= new JButton("+"); JButton sb= new JButton("-"); JButton mb= new JButton("*"); JButton db= new JButton("/"); JButton ab= new JButton("+"); JButton sb= new JButton("-"); //here to set the size,bg,dimensionals jtf = new JTextField(); jtf.setPreferredSize(new Dimension(180, 30)); jtf.setBackground(Color.BLUE); jtf.setEnabled(false); jtf.setHorizontalAlignment(4); jtf.setDisabledTextColor(Color.GREEN);
//here set the layouts JPanel PM = new JPanel(); PM.setLayout(new BoxLayout(PM, BoxLayout.Y_AXIS)); JPanel pt = new JPanel(); pt.setPreferredSize(new Dimension(160, 20)); pt.add(jtf); JPanel pnb = new JPanel(); pnb.setPreferredSize(new Dimension(160, 100)); for(int i = 9; i>=0; i--) { pnb.add(bn[i]); } //here buttons add to panels JPanel pb_nom = new JPanel(); pb_nom.setPreferredSize(new Dimension(160, 35)); pb_nom.add(eb); pb_nom.add(cb); pb_nom.add(mb); pb_nom.add(db); pb_nom.add(ab); pb_nom.add(sb); umo_ji[] pb_action = new umo_ji[10]; for ( int i = 0; i < 10; i++ ) { pb_action[i] = new umo_ji(bn[i]); bn[i].addActionListener(pb_action[i]); } //here perform action buttons eb e1 = new eb(); eb.addActionListener(e1); cb c = new cb(); cb.addActionListener(c); mb e2 = new mb(); mb.addActionListener(e2); db e3 = new db(); db.addActionListener(e3); ab add = new ab(); ab.addActionListener(add);
Sub_But subtract = new Sub_But(); sb.addActionListener(subtract); PM.add(pt); PM.add(pnb); PM.add(pb_nom); add(PM); //To set the title and size setTitle("Button_Test"); setSize(180, 290); setLocationByPlatform(true); setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); setVisible(true); } private class umo_ji implements ActionListener { //here implements actionlistener private String c; public umo_ji(JButton a) { this.c = a.text_get(); } public void actionPerformed(ActionEvent e) { if (!jtf.text_get().equals("0.0")) { jtf.text_set(jtf.text_get() + c); } else { jtf.text_set(""); actionPerformed(e); } } } private class eb implements ActionListener { @Override//overide buttons public void actionPerformed(ActionEvent e) { tn2 = Double.parseDouble(jtf.text_get()); if (nom == 0) { jtf.text_set(Double.toString((Math.round((tn / tn2) * 100)) / 100)); } else if (nom == 1) { jtf.text_set(Double.toString(tn * tn2));
} else if (nom == 2) { jtf.text_set(Double.toString(tn2 + tn)); } else if (nom == 3) { jtf.text_set(Double.toString(tn - tn2)); } else { jtf.text_set(String.valueOf(tn)); } tn = Double.parseDouble(jtf.text_get()); } } private class cb implements ActionListener { @Override public void actionPerformed(ActionEvent e) { jtf.text_set(""); tn = 0; tn2 = 0; nom = -1; } } private class db implements ActionListener { @Override public void actionPerformed(ActionEvent e) { if (tn == 0) { tn = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } else { tn2 = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } nom = 0; } } private class mb implements ActionListener { @Override
public void actionPerformed(ActionEvent e) { if (tn == 0) { tn = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } else { tn2 = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } nom = 1; } } private class ab implements ActionListener { @Override public void actionPerformed(ActionEvent e) { if (tn == 0) { tn = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } else { tn2 = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } nom = 2; } } private class Sub_But implements ActionListener { @Override public void actionPerformed(ActionEvent e) { if (tn == 0) { tn = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } else { tn2 = Double.parseDouble(jtf.text_get()); jtf.text_set(""); }
nom = 3; } } }

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ANSimport javax.swing.;import java.awt.; import java.awt.ev.pdf

  • 1. ANS: import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; public class Frame extends JFrame { private double tn = 0;//here declare the variables private double tn2 = 0; private byte nom = -1; private JTextField jtf; public Frame() { JButton[] bn = new JButton[10]; for ( int i = 9; i >= 0; i--) { bn[i] = new JButton(Integer.toString(i)); } //here declare the buttons JButton eb= new JButton("e1"); JButton cb= new JButton("C"); JButton ab= new JButton("+"); JButton sb= new JButton("-"); JButton mb= new JButton("*"); JButton db= new JButton("/"); JButton ab= new JButton("+"); JButton sb= new JButton("-"); //here to set the size,bg,dimensionals jtf = new JTextField(); jtf.setPreferredSize(new Dimension(180, 30)); jtf.setBackground(Color.BLUE); jtf.setEnabled(false); jtf.setHorizontalAlignment(4); jtf.setDisabledTextColor(Color.GREEN); //here set the layouts JPanel PM = new JPanel(); PM.setLayout(new BoxLayout(PM, BoxLayout.Y_AXIS));
  • 2. JPanel pt = new JPanel(); pt.setPreferredSize(new Dimension(160, 20)); pt.add(jtf); JPanel pnb = new JPanel(); pnb.setPreferredSize(new Dimension(160, 100)); for(int i = 9; i>=0; i--) { pnb.add(bn[i]); } //here buttons add to panels JPanel pb_nom = new JPanel(); pb_nom.setPreferredSize(new Dimension(160, 35)); pb_nom.add(eb); pb_nom.add(cb); pb_nom.add(mb); pb_nom.add(db); pb_nom.add(ab); pb_nom.add(sb); umo_ji[] pb_action = new umo_ji[10]; for ( int i = 0; i < 10; i++ ) { pb_action[i] = new umo_ji(bn[i]); bn[i].addActionListener(pb_action[i]); } //here perform action buttons eb e1 = new eb(); eb.addActionListener(e1); cb c = new cb(); cb.addActionListener(c); mb e2 = new mb(); mb.addActionListener(e2); db e3 = new db(); db.addActionListener(e3); ab add = new ab(); ab.addActionListener(add); Sub_But subtract = new Sub_But(); sb.addActionListener(subtract); PM.add(pt);
  • 3. PM.add(pnb); PM.add(pb_nom); add(PM); //To set the title and size setTitle("Button_Test"); setSize(180, 290); setLocationByPlatform(true); setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); setVisible(true); } private class umo_ji implements ActionListener { //here implements actionlistener private String c; public umo_ji(JButton a) { this.c = a.text_get(); } public void actionPerformed(ActionEvent e) { if (!jtf.text_get().equals("0.0")) { jtf.text_set(jtf.text_get() + c); } else { jtf.text_set(""); actionPerformed(e); } } } private class eb implements ActionListener { @Override//overide buttons public void actionPerformed(ActionEvent e) { tn2 = Double.parseDouble(jtf.text_get()); if (nom == 0) { jtf.text_set(Double.toString((Math.round((tn / tn2) * 100)) / 100)); } else if (nom == 1) { jtf.text_set(Double.toString(tn * tn2)); } else if (nom == 2) { jtf.text_set(Double.toString(tn2 + tn)); } else if (nom == 3) {
  • 4. jtf.text_set(Double.toString(tn - tn2)); } else { jtf.text_set(String.valueOf(tn)); } tn = Double.parseDouble(jtf.text_get()); } } private class cb implements ActionListener { @Override public void actionPerformed(ActionEvent e) { jtf.text_set(""); tn = 0; tn2 = 0; nom = -1; } } private class db implements ActionListener { @Override public void actionPerformed(ActionEvent e) { if (tn == 0) { tn = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } else { tn2 = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } nom = 0; } } private class mb implements ActionListener { @Override public void actionPerformed(ActionEvent e) { if (tn == 0) { tn = Double.parseDouble(jtf.text_get());
  • 5. jtf.text_set(""); } else { tn2 = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } nom = 1; } } private class ab implements ActionListener { @Override public void actionPerformed(ActionEvent e) { if (tn == 0) { tn = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } else { tn2 = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } nom = 2; } } private class Sub_But implements ActionListener { @Override public void actionPerformed(ActionEvent e) { if (tn == 0) { tn = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } else { tn2 = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } nom = 3; } }
  • 6. } Solution ANS: import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; public class Frame extends JFrame { private double tn = 0;//here declare the variables private double tn2 = 0; private byte nom = -1; private JTextField jtf; public Frame() { JButton[] bn = new JButton[10]; for ( int i = 9; i >= 0; i--) { bn[i] = new JButton(Integer.toString(i)); } //here declare the buttons JButton eb= new JButton("e1"); JButton cb= new JButton("C"); JButton ab= new JButton("+"); JButton sb= new JButton("-"); JButton mb= new JButton("*"); JButton db= new JButton("/"); JButton ab= new JButton("+"); JButton sb= new JButton("-"); //here to set the size,bg,dimensionals jtf = new JTextField(); jtf.setPreferredSize(new Dimension(180, 30)); jtf.setBackground(Color.BLUE); jtf.setEnabled(false); jtf.setHorizontalAlignment(4); jtf.setDisabledTextColor(Color.GREEN);
  • 7. //here set the layouts JPanel PM = new JPanel(); PM.setLayout(new BoxLayout(PM, BoxLayout.Y_AXIS)); JPanel pt = new JPanel(); pt.setPreferredSize(new Dimension(160, 20)); pt.add(jtf); JPanel pnb = new JPanel(); pnb.setPreferredSize(new Dimension(160, 100)); for(int i = 9; i>=0; i--) { pnb.add(bn[i]); } //here buttons add to panels JPanel pb_nom = new JPanel(); pb_nom.setPreferredSize(new Dimension(160, 35)); pb_nom.add(eb); pb_nom.add(cb); pb_nom.add(mb); pb_nom.add(db); pb_nom.add(ab); pb_nom.add(sb); umo_ji[] pb_action = new umo_ji[10]; for ( int i = 0; i < 10; i++ ) { pb_action[i] = new umo_ji(bn[i]); bn[i].addActionListener(pb_action[i]); } //here perform action buttons eb e1 = new eb(); eb.addActionListener(e1); cb c = new cb(); cb.addActionListener(c); mb e2 = new mb(); mb.addActionListener(e2); db e3 = new db(); db.addActionListener(e3); ab add = new ab(); ab.addActionListener(add);
  • 8. Sub_But subtract = new Sub_But(); sb.addActionListener(subtract); PM.add(pt); PM.add(pnb); PM.add(pb_nom); add(PM); //To set the title and size setTitle("Button_Test"); setSize(180, 290); setLocationByPlatform(true); setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); setVisible(true); } private class umo_ji implements ActionListener { //here implements actionlistener private String c; public umo_ji(JButton a) { this.c = a.text_get(); } public void actionPerformed(ActionEvent e) { if (!jtf.text_get().equals("0.0")) { jtf.text_set(jtf.text_get() + c); } else { jtf.text_set(""); actionPerformed(e); } } } private class eb implements ActionListener { @Override//overide buttons public void actionPerformed(ActionEvent e) { tn2 = Double.parseDouble(jtf.text_get()); if (nom == 0) { jtf.text_set(Double.toString((Math.round((tn / tn2) * 100)) / 100)); } else if (nom == 1) { jtf.text_set(Double.toString(tn * tn2));
  • 9. } else if (nom == 2) { jtf.text_set(Double.toString(tn2 + tn)); } else if (nom == 3) { jtf.text_set(Double.toString(tn - tn2)); } else { jtf.text_set(String.valueOf(tn)); } tn = Double.parseDouble(jtf.text_get()); } } private class cb implements ActionListener { @Override public void actionPerformed(ActionEvent e) { jtf.text_set(""); tn = 0; tn2 = 0; nom = -1; } } private class db implements ActionListener { @Override public void actionPerformed(ActionEvent e) { if (tn == 0) { tn = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } else { tn2 = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } nom = 0; } } private class mb implements ActionListener { @Override
  • 10. public void actionPerformed(ActionEvent e) { if (tn == 0) { tn = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } else { tn2 = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } nom = 1; } } private class ab implements ActionListener { @Override public void actionPerformed(ActionEvent e) { if (tn == 0) { tn = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } else { tn2 = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } nom = 2; } } private class Sub_But implements ActionListener { @Override public void actionPerformed(ActionEvent e) { if (tn == 0) { tn = Double.parseDouble(jtf.text_get()); jtf.text_set(""); } else { tn2 = Double.parseDouble(jtf.text_get()); jtf.text_set(""); }