Android String Sub String Get right(String str, int length)

Description

right

License

Apache License

Declaration

public static String right(String str, int length) 

Method Source Code

//package com.java2s;
/**/*from  w ww .  ja v  a  2s  . c  o m*/
 * Copyright 2013 ??????
 *
 * 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 {
    public static final String EMPTY = "";

    public static String right(String str, int length) {
        if (str == null) {
            return null;
        }
        if (length < 0) {
            return EMPTY;
        }
        if (str.length() <= length) {
            return str;
        }
        return str.substring(str.length() - length);
    }

    public static String substring(String str, int beginIndex) {
        if (str == null) {
            return null;
        }

        if (beginIndex < 0) {
            return EMPTY;
        }

        if (beginIndex > str.length()) {
            return EMPTY;
        }

        return str.substring(beginIndex);
    }

    public static String substring(String str, int beginIndex, int endIndex) {
        if (str == null) {
            return null;
        }

        if (beginIndex < 0 || endIndex < 0) {
            return EMPTY;
        }

        if (endIndex > str.length()) {
            endIndex = str.length();
        }

        if (beginIndex > endIndex || beginIndex > str.length()) {
            return EMPTY;
        }

        return str.substring(beginIndex, endIndex);
    }
}

Related

1. left(String str, int length)
2. delSuffix(String str)
3. deleteLast(String str, int num)
4. deleteLastIf(String str, String eq_str)
5. getTailorString(String string, int length)