Hello developers,
Im still practising my programming with coding a calculator after some reading on the basics of Java. Could really use a pointer or two here.
I wrote a calculate function(calculateResult). The error message I got says that the function cannot be applied on the 'number2' argument. (on line 199). I know now I cannot use calculateResult and accept number2 argument in the same subroutine. So what do I do? Any idea?
package assign1;
import java.awt.BorderLayout;
import java.awt.Dimension;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import java.awt.*;
import com.borland.jbcl.layout.XYLayout;
import com.borland.jbcl.layout.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
/**
* <p>Title: </p>
*
* <p>Description: </p>
*
* <p>Copyright: Copyright (c) 2007</p>
*
* <p>Company: </p>
*
* @author not attributable
* @version 1.0
*/
public class Frame1 extends JFrame {
JPanel contentPane;
XYLayout xYLayout1 = new XYLayout();
TextField textField1 = new TextField();
Button button1 = new Button();
Button button2 = new Button();
Button button3 = new Button();
Button button4 = new Button();
Button button5 = new Button();
Button button6 = new Button();
Button button7 = new Button();
Button button8 = new Button();
Button button9 = new Button();
Button button10 = new Button();
Button button11 = new Button();
Button button12 = new Button();
Button button13 = new Button();
Button button14 = new Button();
Button button15 = new Button();
Button button16 = new Button();
String operator = new String();
//selfmade attributes
double number1, number2, result;
public Frame1() {
try {
setDefaultCloseOperation(EXIT_ON_CLOSE);
jbInit();
} catch (Exception exception) {
exception.printStackTrace();
}
}
/**
* Component initialization.
*
* @throws java.lang.Exception
*/
private void jbInit() throws Exception {
contentPane = (JPanel) getContentPane();
contentPane.setLayout(xYLayout1);
setSize(new Dimension(400, 300));
setTitle("Calculator");
textField1.setText("");
button1.setLabel("1");
button1.addActionListener(new Frame1_button1_actionAdapter(this));
button2.setLabel("+");
button2.addActionListener(new Frame1_button2_actionAdapter(this));
button3.setLabel("=");
button3.addActionListener(new Frame1_button3_actionAdapter(this));
button4.setLabel("4");
button4.addActionListener(new Frame1_button4_actionAdapter(this));
button5.setLabel("2");
button5.addActionListener(new Frame1_button5_actionAdapter(this));
button6.setLabel("3");
button6.addActionListener(new Frame1_button6_actionAdapter(this));
button7.setLabel("5");
button7.addActionListener(new Frame1_button7_actionAdapter(this));
button8.setLabel("6");
button8.addActionListener(new Frame1_button8_actionAdapter(this));
button9.setLabel("7");
button9.addActionListener(new Frame1_button9_actionAdapter(this));
button10.setLabel("8");
button10.addActionListener(new Frame1_button10_actionAdapter(this));
button11.setLabel("9");
button11.addActionListener(new Frame1_button11_actionAdapter(this));
button12.setLabel("/");
button13.setLabel("*");
button14.setLabel("-");
button15.setLabel("0");
button15.addActionListener(new Frame1_button15_actionAdapter(this));
button16.setLabel(".");
button14.addActionListener(new Frame1_button14_actionAdapter(this));
button13.addActionListener(new Frame1_button13_actionAdapter(this));
button12.addActionListener(new Frame1_button12_actionAdapter(this));
contentPane.add(textField1, new XYConstraints(14, 19, 366, 54));
contentPane.add(button9, new XYConstraints(179, 84, 41, 28));
contentPane.add(button10, new XYConstraints(227, 85, 47, 28));
contentPane.add(button8, new XYConstraints(227, 118, 48, 33));
contentPane.add(button7, new XYConstraints(179, 118, 42, 34));
contentPane.add(button1, new XYConstraints(179, 157, 46, 33));
contentPane.add(button14, new XYConstraints(335, 155, 45, 33));
contentPane.add(button15, new XYConstraints(180, 194, 44, 35));
contentPane.add(button6, new XYConstraints(279, 156, 49, 34));
contentPane.add(button4, new XYConstraints(280, 119, 47, 34));
contentPane.add(button11, new XYConstraints(279, 84, 50, 30));
contentPane.add(button13, new XYConstraints(335, 119, 44, 31));
contentPane.add(button12, new XYConstraints(335, 86, 43, 29));
contentPane.add(button5, new XYConstraints(229, 157, 45, 34));
contentPane.add(button2, new XYConstraints(279, 194, 47, 33));
contentPane.add(button3, new XYConstraints(336, 192, 43, 35));
contentPane.add(button16, new XYConstraints(235, 198, 40, 30));
}
public void button1_actionPerformed(ActionEvent e) {
String help;
help = textField1.getText();
textField1.setText(help+"1");
}
public void button5_actionPerformed(ActionEvent e) {
String help;
help = textField1.getText();
textField1.setText(help+"2");
}
public void button6_actionPerformed(ActionEvent e) {
String help;
help = textField1.getText();
textField1.setText(help+"3");
}
public void button4_actionPerformed(ActionEvent e) {
String help;
help = textField1.getText();
textField1.setText(help+"4");
}
public void button7_actionPerformed(ActionEvent e) {
String help;
help = textField1.getText();
textField1.setText(help+"5");
}
public void button8_actionPerformed(ActionEvent e) {
String help;
help = textField1.getText();
textField1.setText(help+"6");
}
public void button9_actionPerformed(ActionEvent e) {
String help;
help = textField1.getText();
textField1.setText(help+"7");
}
public void button10_actionPerformed(ActionEvent e) {
String help;
help = textField1.getText();
textField1.setText(help+"8");
}
public void button11_actionPerformed(ActionEvent e) {
String help;
help = textField1.getText();
textField1.setText(help+"9");
}
public void button15_actionPerformed(ActionEvent e) {
String help;
help = textField1.getText();
textField1.setText(help+"0");
}
public void button2_actionPerformed(ActionEvent e) {
String help;
help = textField1.getText();
Double number1 = Double.valueOf(help);
textField1.setText("");
operator = "+";
}
public void button3_actionPerformed(ActionEvent e) {
String help;
help = textField1.getText();
Double number2 = Double.valueOf(help);
result = calculateResult(operator,number1,number2); //I must not accept number 2 here so what can i do?
String si= String.valueOf(result);
textField1.setText(si);
operator="=";
}
public void button14_actionPerformed(ActionEvent e) {
String help;
help = textField1.getText();
Double number1 = Double.valueOf(help);
textField1.setText("");
operator = "-";
}
public void button13_actionPerformed(ActionEvent e) {
String help;
help = textField1.getText();
Double number1 = Double.valueOf(help);
textField1.setText("");
operator = "*";
}
public void button12_actionPerformed(ActionEvent e) {
String help;
help = textField1.getText();
Double number1 = Double.valueOf(help);
textField1.setText("");
operator = "/";
}
public double calculateResult(String operator, double number1, double number2)
{
if(operator=="+")
result = number1 + number2;
else if(operator=="-")
result = number1 - number2;
else if(operator=="*")
result = number1 * number2;
else if(operator=="/")
result = number1 / number2;
return result;
}
class Frame1_button3_actionAdapter implements ActionListener {
private Frame1 adaptee;
Frame1_button3_actionAdapter(Frame1 adaptee) {
this.adaptee = adaptee;
}
public void actionPerformed(ActionEvent e) {
adaptee.button3_actionPerformed(e);
}
}
class Frame1_button2_actionAdapter implements ActionListener {
private Frame1 adaptee;
Frame1_button2_actionAdapter(Frame1 adaptee) {
this.adaptee = adaptee;
}
public void actionPerformed(ActionEvent e) {
adaptee.button2_actionPerformed(e);
}
}
class Frame1_button15_actionAdapter implements ActionListener {
private Frame1 adaptee;
Frame1_button15_actionAdapter(Frame1 adaptee) {
this.adaptee = adaptee;
}
public void actionPerformed(ActionEvent e) {
adaptee.button15_actionPerformed(e);
}
}
class Frame1_button11_actionAdapter implements ActionListener {
private Frame1 adaptee;
Frame1_button11_actionAdapter(Frame1 adaptee) {
this.adaptee = adaptee;
}
public void actionPerformed(ActionEvent e) {
adaptee.button11_actionPerformed(e);
}
}
class Frame1_button10_actionAdapter implements ActionListener {
private Frame1 adaptee;
Frame1_button10_actionAdapter(Frame1 adaptee) {
this.adaptee = adaptee;
}
public void actionPerformed(ActionEvent e) {
adaptee.button10_actionPerformed(e);
}
}
class Frame1_button9_actionAdapter implements ActionListener {
private Frame1 adaptee;
Frame1_button9_actionAdapter(Frame1 adaptee) {
this.adaptee = adaptee;
}
public void actionPerformed(ActionEvent e) {
adaptee.button9_actionPerformed(e);
}
}
class Frame1_button8_actionAdapter implements ActionListener {
private Frame1 adaptee;
Frame1_button8_actionAdapter(Frame1 adaptee) {
this.adaptee = adaptee;
}
public void actionPerformed(ActionEvent e) {
adaptee.button8_actionPerformed(e);
}
}
class Frame1_button7_actionAdapter implements ActionListener {
private Frame1 adaptee;
Frame1_button7_actionAdapter(Frame1 adaptee) {
this.adaptee = adaptee;
}
public void actionPerformed(ActionEvent e) {
adaptee.button7_actionPerformed(e);
}
}
class Frame1_button4_actionAdapter implements ActionListener {
private Frame1 adaptee;
Frame1_button4_actionAdapter(Frame1 adaptee) {
this.adaptee = adaptee;
}
public void actionPerformed(ActionEvent e) {
adaptee.button4_actionPerformed(e);
}
}
class Frame1_button6_actionAdapter implements ActionListener {
private Frame1 adaptee;
Frame1_button6_actionAdapter(Frame1 adaptee) {
this.adaptee = adaptee;
}
public void actionPerformed(ActionEvent e) {
adaptee.button6_actionPerformed(e);
}
}
class Frame1_button5_actionAdapter implements ActionListener {
private Frame1 adaptee;
Frame1_button5_actionAdapter(Frame1 adaptee) {
this.adaptee = adaptee;
}
public void actionPerformed(ActionEvent e) {
adaptee.button5_actionPerformed(e);
}
}
class Frame1_button1_actionAdapter implements ActionListener {
private Frame1 adaptee;
Frame1_button1_actionAdapter(Frame1 adaptee) {
this.adaptee = adaptee;
}
public void actionPerformed(ActionEvent e) {
adaptee.button1_actionPerformed(e);
}
}
}
class Frame1_button12_actionAdapter implements ActionListener {
private Frame1 adaptee;
Frame1_button12_actionAdapter(Frame1 adaptee) {
this.adaptee = adaptee;
}
public void actionPerformed(ActionEvent e) {
adaptee.button12_actionPerformed(e);
}
}
class Frame1_button13_actionAdapter implements ActionListener {
private Frame1 adaptee;
Frame1_button13_actionAdapter(Frame1 adaptee) {
this.adaptee = adaptee;
}
public void actionPerformed(ActionEvent e) {
adaptee.button13_actionPerformed(e);
}
}
class Frame1_button14_actionAdapter implements ActionListener {
private Frame1 adaptee;
Frame1_button14_actionAdapter(Frame1 adaptee) {
this.adaptee = adaptee;
}
public void actionPerformed(ActionEvent e) {
adaptee.button14_actionPerformed(e);
}
}