Java Utililty Methods JTextComponent Select

List of utility methods to do JTextComponent Select

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JTextComponent Select

Description

The list of methods to do JTextComponent Select are organized into topic(s).

Method

void addSelectAllTextOnFocus(final JTextComponent component)
add Select All Text On Focus

component.addFocusListener(new FocusAdapter() {
 public void focusGained(FocusEvent e) {
 component.selectAll();
});

void focusSelect(final JTextComponent tf)
focus Select

tf.addFocusListener(new FocusAdapter() {
 public void focusGained(FocusEvent e) {
 tf.selectAll();
});

boolean isSelectionUpperCase(JTextComponent textPane)
is Selection Upper Case

String text = textPane.getSelectedText();
byte[] bytes = text.getBytes();
for (int i = 0; i < bytes.length; i++) {
 if (Character.isLowerCase((char) bytes[i])) {
 return false;
return true;
...

void replaceSelectionAndSelect(JTextComponent component, String text)
replace Selection And Select

int position = Math.min(component.getSelectionStart(), component.getSelectionEnd());
component.replaceSelection(text);
component.setCaretPosition(position);
component.moveCaretPosition(position + text.length());

void selectAll(final JTextComponent textComponent)
Selects all contents of a text component.

if (!textComponent.hasFocus()) {
 textComponent.requestFocus();
textComponent.selectAll();

void selectAll(JTextComponent textComponent)
select All

textComponent.selectAll();

void selectAllOnFocus(JTextComponent textComponent)
select All On Focus

textComponent.addFocusListener(SELECT_ALL_FOCUS_LISTENER);

void selectAndRequestFocus(JTextComponent editor)
select And Request Focus

editor.requestFocusInWindow();
editor.selectAll();

void selectFirstArg(String strText, int initialSelectionStart, JTextComponent editor)
select First Arg

int firstParen = strText.indexOf("(");
if (firstParen >= 0 && firstParen < strText.indexOf(")")) {
 int startPos = initialSelectionStart + firstParen + 1;
 editor.setCaretPosition(startPos);

void selectionToUpperCase(JTextComponent textPane)
selection To Upper Case

int start = textPane.getSelectionStart();
int end = textPane.getSelectionEnd();
if (Math.abs(start - end) > 0) {
 String upper = textPane.getSelectedText().toUpperCase();
 textPane.replaceSelection(upper);
 textPane.setCaretPosition(start);
 textPane.moveCaretPosition(end);