Java String Left Align leftAlign(StringBuilder in, int len)

Description

Left aligns some text in a StringBuilder N.B.

License

Apache License

Parameter

Parameter	Description
in	StringBuilder containing some text
len	output length desired

Return

input StringBuilder, with trailing spaces

Declaration

public static StringBuilder leftAlign(StringBuilder in, int len) 

Method Source Code

//package com.java2s;
/*//from   w  w  w  . j  av  a2 s.c  o m
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 {
    private static final String SPACES = "                                 ";
    private static final int SPACES_LEN = SPACES.length();

    /**
     * Left aligns some text in a StringBuilder N.B. modifies the input buffer
     *
     * @param in
     *            StringBuilder containing some text
     * @param len
     *            output length desired
     * @return input StringBuilder, with trailing spaces
     */
    public static StringBuilder leftAlign(StringBuilder in, int len) {
        int sfx = len - in.length();
        if (sfx <= 0) {
            return in;
        }
        if (sfx > SPACES_LEN) {
            sfx = SPACES_LEN;
        }
        in.append(SPACES.substring(0, sfx));
        return in;
    }
}

Related

1. leftAlign(int totalWidth, String s)
2. leftAlign(String s, int width)
3. leftAlign(String text, int width)