Java Utililty Methods JTextField Number

List of utility methods to do JTextField Number

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Description

The list of methods to do JTextField Number are organized into topic(s).

Method

voidformat(JTextField txt, double num, String fmt)
format 
DecimalFormat df = new DecimalFormat(fmt);
txt.setText(df.format(num));
doublegetNum(JTextField txt, double defaultNum)
get Num 
double num = defaultNum;
try {
    String str = txt.getText().trim();
    num = Double.parseDouble(str);
} catch (Exception ex) {
return num;
intgetNumber(JTextField field, Integer defaultInt)
get Number 
String value = field.getText();
Integer valueInt = null;
if (value.equals("")) {
    valueInt = defaultInt;
} else {
    try {
        valueInt = Integer.parseInt(value);
    } catch (Exception e) {
...
booleanlargeEqualThan(javax.swing.JTextField input, double x)
Check if the JTextField input is larger or equal than x 
double d = new Double(input.getText()).doubleValue();
if (d >= x)
    return true;
return false;
intparseIntFromField(JTextField jField, int pDefault)
parse Int From Field 
int result = pDefault;
try {
    result = Integer.parseInt(jField.getText());
} catch (NumberFormatException nfe) {
    jField.setText(Integer.toString(pDefault));
    result = pDefault;
return result;
...
voidplaceDoubleTextInField(JTextField inField, int length, double toPlace)
place Double Text In Field 
char[] valArray = Double.toString(toPlace).toCharArray();
inField.setText(new String(Arrays.copyOf(valArray, Math.min(valArray.length, length))));
doublereadDoubleFromField(JTextField inField, double defaultValue)
read Double From Field 
try {
    return Double.valueOf(inField.getText());
} catch (Exception e) {
    return defaultValue;
voidsetNumericAndCharOnly(final javax.swing.JTextField textField)
set Numeric And Char Only 
textField.addKeyListener(new KeyAdapter() {
    @Override
    public void keyTyped(KeyEvent evt) {
        if (!Character.isLetterOrDigit(evt.getKeyChar())) {
            evt.consume();
});
...
voidsetTextField(javax.swing.JTextField textField, double value, int precision)
Set a text field with the given value using the given precision. 
java.text.NumberFormat nf = java.text.NumberFormat.getNumberInstance();
nf.setMaximumFractionDigits(precision);
nf.setMinimumFractionDigits(precision);
nf.setGroupingUsed(false);
textField.setText(nf.format(value));
textField.setCaretPosition(0);
voidshowInDecimalFormat(JTextField pJTextField)
show In Decimal Format 
pJTextField.setText(formatNumber(getDecimalNumber(pJTextField.getText().trim())));