Java Utililty Methods JTextComponent Column

List of utility methods to do JTextComponent Column

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Description

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

Method

intgetColumn(int pos, JTextComponent editor)
get Column 
return pos - Utilities.getRowStart(editor, pos) + 1;
intgetColumn(JTextComponent editor, int pos)
get Column 
try {
    return pos - Utilities.getRowStart(editor, pos) + 1;
} catch (BadLocationException e) {
    e.printStackTrace();
return -1;
intgetColumnAtPosition(JTextComponent editor, int caretPosition)
get Column At Position 
if (editor.getDocument().getLength() == 0) {
    return 0;
if (caretPosition >= editor.getDocument().getLength() - 1) {
    caretPosition = editor.getDocument().getLength() - 1;
while (caretPosition < 0) {
    try {
...
intgetColumnNumber(JTextComponent editor, int pos)
Gets the column number at given position of editor. 
if (pos == 0) {
    return 0;
Rectangle r = editor.modelToView(pos);
int start = editor.viewToModel(new Point(0, r.y));
int column = pos - start;
return column;
intgetDocumentPosition(JTextComponent editor, int line, int column)
Get the closest position within the document of the component that has given line and column. 
int lineHeight = editor.getFontMetrics(editor.getFont()).getHeight();
int charWidth = editor.getFontMetrics(editor.getFont()).charWidth('m');
int y = line * lineHeight;
int x = column * charWidth;
Point pt = new Point(x, y);
int pos = editor.viewToModel(pt);
return pos;
voidsetCaretPosition(JTextComponent target, int line, int column)
Sets the caret position of the given target to the given line and column 
int p = getDocumentPosition(target, line, column);
target.setCaretPosition(p);