hi :)))
I have a pro. here which I can't use the keyListener and the buttons (ActionListener )at the same time !!
I can use once a time either the keylistener OR ActionListener !
and in my prog. I should use both of them at the same time !
what happened to me >>is that when I use the keyboard everything goes right >>but if I pressed into For eg :
8 (Keyboard) + (buttons -> (KeyListener)) then if I try to press to 9 (Keyboard) it will not press and set anything to the textarea and also I can't use all of the keyListener again until I'll run the prog. once again !
I don't know why this is happening !!
plz help me :(
thanks :))
and this is the code ^_^
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class calculator extends JFrame {
private JTextField T;
private String Operator = "/*-+=";
private String number = ".0123456789";
private String command = "+"; // Intaialization
private String change = "N";
private String txt = "";
private String temp = "";
private String arg = "";
private Double result = 0.0;
// KeyBoard
private JButton B_On,B_Shift,B_exp,B_Log,Btan_1,Bcos_1;
private JButton Bsin_1,B_sqrt,B_tan,B_sin,B_cos,Bsinch;
private JButton B_cosh, B_tansh,Bfactorial,BInverseOfX,BAc,BDel;
private JButton B_9,B_8,B_7,B_6,B_5,B_4;
private JButton B_3,B_2,B_1,B_0,B_Multi,B_Div;
private JButton B_add,B_sub,B_equal,B_answ,B_dot,B_power;
private JButton B_abs,B_Topower;
private Double tot2=0.0;
private Double tot1 = 0.0;
private char operator ;
public calculator() {
super("Calculator");
setVisible(true);
setLayout(null);
T = new JTextField("0");
T.setHorizontalAlignment(FlowLayout.TRAILING);
T.setSize(360, 30);
T.setLocation(40, 20);
add(T);
B_On=new JButton("ON");
B_On.setSize(60,30);
B_On.setLocation(340,60);
add(B_On);
B_Shift=new JButton("Shift");
B_Shift.setSize(60,30);
B_Shift.setLocation(40,60);
add(B_Shift);
B_exp=new JButton("exp");
B_exp.setSize(60,30);
B_exp.setLocation(340,100);
add(B_exp);
B_Log=new JButton("Log");
B_Log.setSize(70,30);
B_Log.setLocation(240,100);
add(B_Log);
Btan_1=new JButton("tan-1");
Btan_1.setSize(70,30);
Btan_1.setLocation(240,140);
add(Btan_1);
Bcos_1=new JButton("cos-1");
Bcos_1.setSize(70,30);
Bcos_1.setLocation(140,140);
add(Bcos_1);
Bsin_1=new JButton("Sin-1");
Bsin_1.setSize(70,30);
Bsin_1.setLocation(40,140);
add(Bsin_1);
B_sqrt=new JButton("sqrt");
B_sqrt.setSize(60,30);
B_sqrt.setLocation(340,180);
add(B_sqrt);
B_tan=new JButton("Tan");
B_tan.setSize(70,30);
B_tan.setLocation(240,180);
add(B_tan);
B_sin=new JButton("Sin");
B_sin.setSize(70,30);
B_sin.setLocation(140,180);
add(B_sin);
B_cosh=new JButton("Cosh");
B_cosh.setSize(70,30);
B_cosh.setLocation(40,180);
add( B_cosh);
Bsinch=new JButton("sinch");
Bsinch.setSize(70,30);
Bsinch.setLocation(140,100);
add( Bsinch);
B_cos=new JButton("cos");
B_cos.setSize(60,30);
B_cos.setLocation(340,140);
add( B_cos);
B_tansh=new JButton("tansh");
B_tansh.setSize(70,30);
B_tansh.setLocation(40,100);
add( B_tansh);
Bfactorial=new JButton("X!");
Bfactorial.setSize(60,30);
Bfactorial.setLocation(340,220);
add( Bfactorial);
BInverseOfX=new JButton("1/x");
BInverseOfX.setSize(70,30);
BInverseOfX.setLocation(240,220);
add( BInverseOfX);
B_abs=new JButton("| |");
B_abs.setSize(70,30);
B_abs.setLocation(140,220);
add( B_abs);
B_Topower=new JButton("^");
B_Topower.setSize(70,30);
B_Topower.setLocation(40,220);
add( B_Topower);
BAc=new JButton("Ac");
BAc.setSize(60,30);
BAc.setLocation(340,260);
add( BAc);
BDel=new JButton("Del");
BDel.setSize(60,30);
BDel.setLocation(265,260);
add( BDel);
B_9=new JButton("9");
B_9.setSize(60,30);
B_9.setLocation(190,260);
add( B_9);
B_8=new JButton("8");
B_8.setSize(60,30);
B_8.setLocation(115,260);
add( B_8);
B_7=new JButton("7");
B_7.setSize(60,30);
B_7.setLocation(40,260);
add( B_7);
B_6=new JButton("6");
B_6.setSize(60,30);
B_6.setLocation(190,300);
add( B_6);
B_5=new JButton("5");
B_5.setSize(60,30);
B_5.setLocation(115,300);
add( B_5);
B_4=new JButton("4");
B_4.setSize(60,30);
B_4.setLocation(40,300);
add( B_4);
B_3=new JButton("3");
B_3.setSize(60,30);
B_3.setLocation(190,340);
add( B_3);
B_2=new JButton("2");
B_2.setSize(60,30);
B_2.setLocation(115,340);
add( B_2);
B_1=new JButton("1");
B_1.setSize(60,30);
B_1.setLocation(40,340);
add( B_1);
B_0=new JButton("0");
B_0.setSize(60,30);
B_0.setLocation(40,380);
add( B_0);
B_Multi=new JButton("*");
B_Multi.setSize(60,30);
B_Multi.setLocation(265,300);
add(B_Multi);
B_Div=new JButton("/");
B_Div.setSize(60,30);
B_Div.setLocation(340,300);
add( B_Div);
B_add=new JButton("+");
B_add.setSize(60,30);
B_add.setLocation(265,340);
add(B_add);
B_sub=new JButton("-");
B_sub.setSize(60,30);
B_sub.setLocation(340,340);
add( B_sub);
B_equal=new JButton("=");
B_equal.setSize(60,30);
B_equal.setLocation(340,380);
add( B_equal);
B_answ=new JButton("Ans");
B_answ.setSize(60,30);
B_answ.setLocation(265,380);
add(B_answ);
B_dot=new JButton(".");
B_dot.setSize(60,30);
B_dot.setLocation(115,380);
add( B_dot);
B_power=new JButton("(-)");
B_power.setSize(60,30);
B_power.setLocation(190,380);
add(B_power);
Inner Handler =new Inner ();
Inner2 Handler2 =new Inner2();
addKeyListener(Handler2);
B_On.addActionListener(Handler);
B_Shift.addActionListener(Handler);
B_exp.addActionListener(Handler);
B_Log.addActionListener(Handler);
Btan_1.addActionListener(Handler);
Bcos_1.addActionListener(Handler);
Bsin_1.addActionListener(Handler);
B_sqrt.addActionListener(Handler);
B_tan.addActionListener(Handler);
B_sin.addActionListener(Handler);
B_cos.addActionListener(Handler);
Bsinch.addActionListener(Handler);
B_cosh.addActionListener(Handler);
B_tansh.addActionListener(Handler);
Bfactorial.addActionListener(Handler);
BInverseOfX.addActionListener(Handler);
BAc.addActionListener(Handler);
BDel.addActionListener(Handler);
B_9.addActionListener(Handler);
B_8.addActionListener(Handler);
B_7.addActionListener(Handler);
B_6.addActionListener(Handler);
B_5.addActionListener(Handler);
B_4.addActionListener(Handler);
B_3.addActionListener(Handler);
B_2.addActionListener(Handler);
B_1.addActionListener(Handler);
B_0.addActionListener(Handler);
B_Multi.addActionListener(Handler);
B_Div.addActionListener(Handler);
B_add.addActionListener(Handler);
B_sub.addActionListener(Handler);
B_equal.addActionListener(Handler);
B_answ.addActionListener(Handler);
B_dot.addActionListener(Handler);
B_power.addActionListener(Handler);
B_abs.addActionListener(Handler);
B_Topower.addActionListener(Handler);
setFocusable(true);
}
//KeyListener
/*requestFocusInWindow();*/
private class Inner2 extends KeyAdapter{
public void keyTyped(KeyEvent E){}
public void keyReleased(KeyEvent E)
{
int ikey = E.getKeyCode();
// T.requestFocus();
if (ikey == 127) T.setText("");
}
public void keyPressed(KeyEvent E)
{
//T.requestFocus();
int ikey = E.getKeyChar();
char ckey = (char) ikey;
if (ckey == 'C')
{
Del();
}
else if (ckey == 'd')
{
T.setText("0");
}
else if (ckey == '=')
{
arg = "=";
txt = T.getText();
displayGeneral();// fun equal
}
else
{
txt = T.getText();
arg = String.valueOf(ckey);
if (arg.equals(".")) {
String S=T.getText();
if (!S.isEmpty()){
if ( T.getText().contains(".")){
// there's already a . in the text, so end
T.setText("Error");
return;
}
else {
T.setText(Integer.toString(Integer.parseInt(S)) + ".");
}
}
else {
T.setText("0.");
}
} // if dot
if (E.isControlDown() && E.getKeyCode()== KeyEvent.VK_C){
temp=T.getText();
}
else if ( E.isControlDown() && E.getKeyCode()== KeyEvent.VK_P)
{
if (T.getText().isEmpty()){
T.setText(temp);
}
else {
T.setText(T.getText()+temp);
}
}
else if ( E.isControlDown() && E.getKeyCode()== KeyEvent.VK_W){
//setVisible(false);
System.exit(0);
}
if(number.indexOf(arg) > -1)
{
if (change == "Y") txt = "";
txt = txt + arg;
T.setText(txt);
change = "N";
}
else check_entry();
}
}//keytyped
}//innerClass
//ActionListener
private class Inner implements ActionListener {
public void actionPerformed(ActionEvent E) {
String event = ((JButton) E.getSource()).getText();
// Added this validation, just in case
if (event == null || event.isEmpty()) {
System.out.println("NO EVENT RECEIVED");
return;
}
String out = T.getText();
//String String_output;
// String result_out=new String ();
if (event.equals("tansh")) {
T.setText(Double.toString(Math.tanh(Double.parseDouble(out))));
}
else if (event.equals("Cosh")) {
T.setText(Double.toString(Math.cosh(Double.parseDouble(out))));
}
else if (event.equals("sinch")) {
T.setText(Double.toString(Math.sinh(Double.parseDouble(out))));
}
else if (event.equals("Tan")) {
T.setText(Double.toString(Math.tan(Double.parseDouble(out))));
}
else if (event.equals("Sin")) {
T.setText(Double.toString(Math.sin(Double.parseDouble(out))));
}
else if (event.equals("cos")) {
T.setText(Double.toString(Math.cos(Double.parseDouble(out))));
}
else if (event.equals("Log")) {
T.setText(Double.toString(Math.log(Double.parseDouble(out))));
}
else if (event.equals("exp")) {
T.setText(Double.toString(Math.exp(Double.parseDouble(out))));
}
else if (event.equals("cos-1")) {
T.setText(Double.toString(Math.acos(Double.parseDouble(out))));
}
else if (event.equals("Sin-1")) {
T.setText(Double.toString(Math.asin(Double.parseDouble(out))));
}
else if (event.equals("tan-1")) {
T.setText(Double.toString(Math.atan(Double.parseDouble(out))));
}
else if ("0123456789".contains(event)) {
numberButton(event, out);
}
else if (event.equals(".")) {
String S=T.getText();
if (!S.isEmpty()){
if ( T.getText().contains(".")){
// there's already a . in the text, so end
T.setText("Error");
return;
}
else {
T.setText(Integer.toString(Integer.parseInt(out)) + ".");
}
}
else {
T.setText("0.");
//T.setText(Integer.toString(Integer.parseInt(out)) + ".");
}
} //dot
else if (event.equals("Ac")) {
T.setText("0");
}
else if (event.equals("Del")) {
String S = T.getText();
if (!S.isEmpty()) {
StringBuilder Sb = new StringBuilder(S);
int size = Sb.length();
Sb.deleteCharAt(size - 1);
String result_string = new String(Sb);
T.setText(result_string);
}
else {
T.setText("0");
}
}
else if (event.equals("sqrt")) {
T.setText(Double.toString(Math.sqrt(Double.parseDouble(out))));
}
else if (event.equals("+")) {
String B_text=B_add.getText();
Math_Operator(B_text);
}
else if (event.equals("-")) {
String B_text=B_sub.getText();
Math_Operator(B_text);
}
else if (event.equals("*")) {
String B_text=B_Multi.getText();
Math_Operator(B_text);
}
else if (event.equals("/")) {
String B_text=B_Div.getText();
Math_Operator(B_text);
}
else if (event.equals("=")) {
switch(operator){
case'+':
tot2=tot1+Double.parseDouble(T.getText());
break;
case'-':
tot2=tot1-Double.parseDouble(T.getText());
break;
case'*':
tot2=tot1*Double.parseDouble(T.getText());
break;
case'/':tot2=tot1/Double.parseDouble(T.getText());
break;
case '^':tot2=Math.pow(tot1,Double.parseDouble(T.getText()));
}
T.setText(Double.toString(tot2));
tot1=0.0;
}
else if (event.equals("| |")) {
T.setText(Double.toString(Math.abs(Double.parseDouble(out))));
}
else if (event.equals("Ans")) {
T.setText(Double.toString(tot2));
}
else if (event.equals("(-)")) {
if (T.getText().isEmpty()){
T.setText("-");
}
else if(T.getText().equals("0")){
T.setText("");
T.setText("-");
}
else{
T.setText(Integer.toString(-1*(Integer.parseInt(out))));}
}
else if (event.equals("1/x")) {
T.setText(Double.toString(1 / Double.parseDouble(out)));
}
else if (event.equals("X!")) {
int f = 1;
String s = T.getText();
if (!s.isEmpty()) {
char c[] = new char[10];
c = s.toCharArray();
boolean a = true;
for (int m = 0; m < c.length; m++) {
if (!Character.isDigit(c[m])) {
a = false;
}
}
if (!a) {
T.setText("Error");
}
else {
int num = Integer.parseInt(out);
for (int v = 1; v <= num; v++) {
f = f * v;
}
String result_string = Integer.toString(f);
T.setText(result_string);
}
}
else {
T.setText("0");
}
}
else {
String B_text=B_Topower.getText();
Math_Operator(B_text);
}
}
}
// all the fuctions
private void Math_Operator(String button){
operator =button.charAt(0);
String t=T.getText();
tot1=tot1+Double.parseDouble(T.getText());
T.setText("");
}
private void numberButton(String number, String out) {
String s = T.getText();
if (!s.isEmpty()) {
char c[] = new char[10];
c = s.toCharArray();
boolean a = true;
for (int m = 0; m < c.length; m++) {
if (!Character.isDigit(c[m])) {
a = false;
break;
}
}
if (!a) {
T.setText(T.getText() + number);
}
else {
int num = Integer.parseInt(out);
String result_string = Integer.toString(num);
T.setText(result_string + number);
}
}
else {
T.setText(number);
}
}
public String computeOperations(String t, String c)//func compute
{
Double Outnum = Double.valueOf(t);
if (c.equals("+")) result = result + Outnum;
else if (c.equals("-"))
{
result = result - Outnum;
}
else if (c.equals("*"))
{
result = result * Outnum;
}
else if (c.equals("/")){
result = result / Outnum;
}
return String.valueOf(result);
}
public void displayGeneral()
{
T.setText(computeOperations(txt,command));// func compute
change = "Y";
command = "+";
result = 0.0;
}
public void Del(){
String S = T.getText();
if (!S.isEmpty()) {
StringBuilder Sb = new StringBuilder(S);
int size = Sb.length();
Sb.deleteCharAt(size - 1);
String result_string = new String(Sb);
T.setText(result_string);
}
else {
T.setText("0");
}
}
public void check_entry()
{
if(arg.equals("=")) {
displayGeneral();
}
else if(Operator.indexOf(arg) > -1)
{
T.setText(computeOperations(txt,command));
command = arg;
change = "Y";
}
}
}//end od class
-----------------------------------
Main Class
import javax.swing.JFrame;
public class Main {
public static void main(String[] args) {
calculator v=new calculator();
v.setSize(450,500);
v.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
