Android Open Source - qiniu-android String Utils

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Back to project page qiniu-android.

License

The source code is released under:

MIT License

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Java Source Code

package com.qiniu.android.utils;
/*www .jav  a2  s .c o m*/
public final class StringUtils {
    public static String join(String[] array, String sep) {
        if (array == null) {
            return null;
        }

        int arraySize = array.length;
        int sepSize = 0;
        if (sep != null && !sep.equals("")) {
            sepSize = sep.length();
        }

        int bufSize = (arraySize == 0 ? 0 : ((array[0] == null ? 16 : array[0].length()) + sepSize) * arraySize);
        StringBuilder buf = new StringBuilder(bufSize);

        for (int i = 0; i < arraySize; i++) {
            if (i > 0) {
                buf.append(sep);
            }
            if (array[i] != null) {
                buf.append(array[i]);
            }
        }
        return buf.toString();
    }

    // no null in array
    public static String jsonJoin(String[] array) {
        int arraySize = array.length;
        int bufSize = arraySize * (array[0].length() + 3);
        StringBuilder buf = new StringBuilder(bufSize);
        for (int i = 0; i < arraySize; i++) {
            if (i > 0) {
                buf.append(',');
            }

            buf.append('"');
            buf.append(array[i]);
            buf.append('"');
        }
        return buf.toString();
    }
}

Java Source Code List