jAVA Assignment Help

[tonespy]

 import java.awt.*;
//import javax.swing.JFrame;
import java.awt.event.*;
import javax.swing.*;

public class Calculator extends JFrame implements ActionListener{

	JPanel panel1 = new JPanel();
	JPanel panel2 = new JPanel();
	JPanel panel3 = new JPanel();
	JPanel panel4 = new JPanel();
	JPanel panel5 = new JPanel();
	
	// this array initializes the numeric buttons 0-9
	static final JButton[] numbers ={new JButton("0"),new JButton("1"),new JButton("2"),new JButton("3"),
		                  new JButton("4"),new JButton("5"),new JButton("6"),new JButton("7"),
		                  new JButton("8"),new JButton("9")};
	
	static final JButton dot=new JButton(".");
	static final JButton unary_plus_minus=new JButton("+-");
	static final JButton plus=new JButton("+");
	static final JButton minus=new JButton("-");
	static final JButton star=new JButton("*");
	static final JButton divide=new JButton("/");
	static final JButton square_root=new JButton("sqr"); // square root of a number
	static final JButton modulo=new JButton("%");  // remainder of a no divided by another  
	static final JButton inverse=new JButton("1/x"); // reciprocal of a number
	static final JButton equals=new JButton("=");
	
	// decimal, binary, octal, clear and exit buttons
	static final JButton dec=new JButton("Dec");
	static final JButton bin=new JButton("Bin");//disable performing operations in dec and oct mode, switch to octal mode
												// perform add and subtraction in binary
	
	static final JButton oct=new JButton("Oct"); //disable performing operations in dec and bin mode, switch to octal mode
												 // perform add and subtraction in octal only	
	static final JButton clear=new JButton("C"); // clear the calculator screen
	static final JButton close=new JButton("Exit"); // close the application
	
	
	static final JButton mem_read=new JButton("MR"); // recall what is stored in memory
	static final JButton mem_clear=new JButton("MC"); // cancel value in memory
	static final JButton mem_store=new JButton("MS"); // store value in memory
	static final JButton mem_add=new JButton("M+"); // add to what is stored in memory
		
	static JTextField display= new JTextField(20);// calculator screen
	
	public Calculator() {
		panel1.setLayout(new FlowLayout(FlowLayout.LEFT,6,4)); // panel to store the numeric and 
		int i;                                                       // arithmetic operators 
		for (i=1;i<4;i++) panel1.add(numbers[i]); //add 1-3 number buttons to panel1
		panel1.add(plus);
		
		for (i=4;i<7;i++) panel1.add(numbers[i]); //add 4-6 number buttons to panel1
		panel1.add(minus);
				
		for (i=7;i<10;i++) panel1.add(numbers[i]); //add 7-9 number buttons to panel1
		panel1.add(star);
		
		panel1.add(numbers[0]); //add 0 button to panel1
		panel1.add(unary_plus_minus);
		panel1.add(dot);
		panel1.add(divide);
		
      		
		// south
		panel2.setLayout(new FlowLayout(FlowLayout.LEFT));

		panel2.add(dec);
		panel2.add(bin);
		panel2.add(oct);
		panel2.add(clear);
		panel2.add(close);
		
		//west
		panel3.setLayout(new GridLayout(4,1));
		panel3.add(mem_clear);
		panel3.add(mem_read);
		panel3.add(mem_store);
		panel3.add(mem_add);
		
		//east
		panel4.setLayout(new GridLayout(4,1));
		panel4.add(square_root);
		panel4.add(modulo);
		panel4.add(inverse);
		panel4.add(equals);
		
		
		panel5.setLayout(new BorderLayout());
		panel5.add(display,BorderLayout.NORTH);
		panel5.add(panel3,BorderLayout.WEST);
		panel5.add(panel4,BorderLayout.EAST);
		panel5.add(panel1,BorderLayout.CENTER);
		panel5.add(panel2,BorderLayout.SOUTH);
		
		
		getContentPane().add(panel5);
		
		// register the buttons
		for (i=0;i<10;i++) numbers[i].addActionListener(this); // this registers listener for buttons 0-9
		close.addActionListener(this);
		clear.addActionListener(this);
                dec.addActionListener(this);
                bin.addActionListener(this);
		oct.addActionListener(this);
                //
                mem_clear.addActionListener(this);
                mem_read.addActionListener(this);
                mem_store.addActionListener(this);
                mem_add.addActionListener(this);
                //
                square_root.addActionListener(this);
                modulo.addActionListener(this);
                equals.addActionListener(this);
                inverse.addActionListener(this);
                //
                unary_plus_minus.addActionListener(this);
                plus.addActionListener(this);
                minus.addActionListener(this);
                star.addActionListener(this);
		divide.addActionListener(this);
                square_root.addActionListener(this);
		// ...
		// complete the rest
	}
	

	
	
	
	public void actionPerformed(ActionEvent e){
	// write the event handlers for the remaining controls here
		if(e.getSource()==close) System.exit(0);
		else if(e.getSource()==clear) display.setText(" ");
		//else if(e.getActionCommand()=="0") display.setText("0");
		
		else if(e.getSource()==inverse){ // this button computes inverse
			float x= Float.parseFloat(display.getText().trim()); //convert string to float
			if (x!=0) x=1/x;
			display.setText(Float.toString(x));
		}
		else  display.setText(display.getText()+e.getActionCommand());  // event handler for buttons 0-9
		
	// .. complete the rest
		
    }
	
	
	
	
		public static void main(String[] args) {
		Calculator c1 = new Calculator();
		c1.setSize(320, 215);
		c1.setTitle("Calculator");
		c1.setVisible(true);
		c1.setDefaultCloseOperation(EXIT_ON_CLOSE);
		
	}


}

[DarrylBurke]

Please go through the Forum Rules, particularly the third paragraph. Also go through Guide For New Members and BB Code List - Java Programming Forum - Learn Java Programming and edit your post accordingly.

Did you have a question?

db

[tonespy]

Please go through the Forum Rules, particularly the third paragraph. Also go through Guide For New Members and BB Code List - Java Programming Forum - Learn Java Programming and edit your post accordingly.

Did you have a question?

db

Yes, making the buttons perform there functions

[Sierra]

Well that is easy, just implement the functions within the action listener.

[tonespy]

Yes, making the buttons perform there functions

I'm having problem implementing the memory section

[tonespy]

okaay

[Sierra]

Um... what memory function? ^^