Java String Chop chop(String s, int i)

Description

Chop i characters off the end of a string.

License

Apache License

Parameter

Parameter	Description
string	String to chop.
i	Number of characters to chop.

Return

String with processed answer.

Declaration

public static String chop(String s, int i) 

Method Source Code

//package com.java2s;
/*/*w w w . j  a v a  2  s .c o m*/
 * Copyright 2001,2004 The Apache Software Foundation.
 * 
 * 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.
 */

public class Main {
    /**
     * Line separator for the OS we are operating on.
     */
    private static final String EOL = System.getProperty("line.separator");

    /**
     * Chop i characters off the end of a string.
     * This method assumes that any EOL characters in String s 
     * and the platform EOL will be the same.
     * A 2 character EOL will count as 1 character. 
     *
     * @param string String to chop.
     * @param i Number of characters to chop.
     * @return String with processed answer.
     */
    public static String chop(String s, int i) {
        return chop(s, i, EOL);
    }

    /**
     * Chop i characters off the end of a string. 
     * A 2 character EOL will count as 1 character. 
     *
     * @param string String to chop.
     * @param i Number of characters to chop.
     * @param eol A String representing the EOL (end of line).
     * @return String with processed answer.
     */
    public static String chop(String s, int i, String eol) {
        if (i == 0 || s == null || eol == null) {
            return s;
        }

        int length = s.length();

        /*
         * if it is a 2 char EOL and the string ends with
         * it, nip it off.  The EOL in this case is treated like 1 character
         */
        if (eol.length() == 2 && s.endsWith(eol)) {
            length -= 2;
            i -= 1;
        }

        if (i > 0) {
            length -= i;
        }

        if (length < 0) {
            length = 0;
        }

        return s.substring(0, length);
    }
}

Related

1. chop(double[][] a, double precision)
2. chop(final String source)
3. chop(String aString)
4. chop(String line)
5. chop(String s)
6. chop(String s, int maxLength)
7. chop(String src, String delim)
8. chop(String str)
9. chop(String str)