import java.awt.*; import java.awt.event.*; class Calculator implements ActionListener { //Declaring Objects Frame f=new Frame(); Label l1=new Label(First Number); Label l2=new Label(Second Number); Label l3=new Label(Result); TextField t1=new TextField(); TextField t2=new TextField(); TextField t3=new TextField(); Button b1=new Button(Add); Button b2=new Button(Sub); Button b3=new Button(Mul); Button b4=new Button(Div); Button b5=new Button(Cancel); Calculator() { //Giving Coordinates l1.setBounds(50,100,100,20); l2.setBounds(50,140,100,20); l3.setBounds(50,180,100,20); t1.setBounds(200,100,100,20); t2.setBounds(200,140,100,20); t3.setBounds(200,180,100,20); b1.setBounds(50,250,50,20); b2.setBounds(110,250,50,20); b3.setBounds(170,250,50,20); b4.setBounds(230,250,50,20); b5.setBounds(290,250,50,20); //Adding components to the frame f.add(l1); f.add(l2); f.add(l3); f.add(t1); f.add(t2); f.add(t3); f.add(b1); f.add(b2); f.add(b3); f.add(b4); f.add(b5); b1.addActionListener(this); b2.addActionListener(this); b3.addActionListener(this); b4.addActionListener(this); b5.addActionListener(this); f.setLayout(null); f.setVisible(true); f.setSize(400,350); } public void actionPerformed(ActionEvent e) { int n1=Integer.parseInt(t1.getText()); int n2=Integer.parseInt(t2.getText()); if(e.getSource()==b1) { t3.setText(String.valueOf(n1+n2)); } if(e.getSource()==b2) { t3.setText(String.valueOf(n1-n2)); } if(e.getSource()==b3) { t3.setText(String.valueOf(n1*n2)); } if(e.getSource()==b4) { t3.setText(String.valueOf(n1/n2)); } if(e.getSource()==b5) { System.exit(0); } } public static void main(String...s) { new Calculator(); } } java program for making a calculator #programmer
Posted on: Sun, 10 Nov 2013 17:33:23 +0000
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