Here you can find the source of setCaretPosition(JTextComponent target, int line, int column)
| Parameter | Description |
|---|---|
| target | a parameter |
| line | the first being 1 |
| column | the first being 1 |
public static void setCaretPosition(JTextComponent target, int line, int column)
//package com.java2s; /*/*from www .j a va2 s . co m*/ * Copyright 2008 Ayman Al-Sairafi ayman.alsairafi@gmail.com * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License * at http://www.apache.org/licenses/LICENSE-2.0 * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.awt.Point; import javax.swing.text.JTextComponent; public class Main { /** * Sets the caret position of the given target to the given line and column * @param target * @param line the first being 1 * @param column the first being 1 */ public static void setCaretPosition(JTextComponent target, int line, int column) { int p = getDocumentPosition(target, line, column); target.setCaretPosition(p); } /** * Get the closest position within the document of the component that * has given line and column. * @param editor * @param line the first being 1 * @param column the first being 1 * @return the closest positon for the text component at given line and * column */ public static int getDocumentPosition(JTextComponent editor, int line, int 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; } }