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

A
anugrahafancy

The document presents a Java Swing application that implements a basic calculator GUI. It features buttons for digits, operations, and functionalities like clear and equals, with corresponding action listeners for user interactions. The layout consists of various panels for organizing the interface elements and handling arithmetic operations.

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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(""); }