Android String Sub String Get mid(String str, int beginIndex, int length)

Description

mid

License

Apache License

Declaration

public static String mid(String str, int beginIndex, int length) 

Method Source Code

//package com.java2s;
/**//from   w ww  .  ja v a 2 s  .  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 mid(String str, int beginIndex, int length) {
        if (str == null) {
            return null;
        }
        if (length < 0 || beginIndex > str.length()) {
            return EMPTY;
        }
        if (beginIndex < 0) {
            beginIndex = 0;
        }
        if (str.length() <= (beginIndex + length)) {
            return str.substring(beginIndex);
        }
        return str.substring(beginIndex, beginIndex + 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. right(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)
6. subStringByByte(String str, int startPos, int length)
7. subStringByByte(String paramString, int beginIndex, int endIndex)
8. subString(String source, String start, int offsetStart, String end, int offsetEnd)
9. subString(String str, int length)