Java tutorial
//package com.java2s; /******************************************************************************* * Copyright (c) 2010 Actuate Corporation. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * Actuate Corporation - initial API and implementation *******************************************************************************/ public class Main { /** * Convert a column number to letters. * @param colNo * @return */ public static String getColumnName(int colNo) { StringBuffer sb = new StringBuffer(); do { int last = colNo % 26; colNo = colNo / 26 - 1; sb.append((char) ((int) 'A' + last)); } while (colNo >= 0); return sb.reverse().toString(); } }