Android Array to String Convert toString(String s)

Description

Returns the string, in single quotes, or "NULL".

License

Apache License

Parameter

Parameter	Description
s	the string

Return

the string, in single quotes, or the string "null" if it's null.

Declaration

public static String toString(String s) 

Method Source Code

//package com.java2s;
/*//w  w w .ja v  a 2  s .  c  o  m
 * Copyright (C) 2000 Google Inc.
 *
 * 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 {
    /**
     * @return a string representation of the given native array.
     */
    public static String toString(float[] iArray) {
        if (iArray == null) {
            return "NULL";
        }

        StringBuilder buffer = new StringBuilder();
        buffer.append("[");
        for (int i = 0; i < iArray.length; i++) {
            buffer.append(iArray[i]);
            if (i != (iArray.length - 1)) {
                buffer.append(", ");
            }
        }
        buffer.append("]");
        return buffer.toString();
    }

    /**
     * @return a string representation of the given native array.
     */
    public static String toString(long[] iArray) {
        if (iArray == null) {
            return "NULL";
        }

        StringBuilder buffer = new StringBuilder();
        buffer.append("[");
        for (int i = 0; i < iArray.length; i++) {
            buffer.append(iArray[i]);
            if (i != (iArray.length - 1)) {
                buffer.append(", ");
            }
        }
        buffer.append("]");
        return buffer.toString();
    }

    /**
     * @return a string representation of the given native array
     */
    public static String toString(int[] iArray) {
        if (iArray == null) {
            return "NULL";
        }

        StringBuilder buffer = new StringBuilder();
        buffer.append("[");
        for (int i = 0; i < iArray.length; i++) {
            buffer.append(iArray[i]);
            if (i != (iArray.length - 1)) {
                buffer.append(", ");
            }
        }
        buffer.append("]");
        return buffer.toString();
    }

    /**
     * @return a string representation of the given array.
     */
    public static String toString(String[] iArray) {
        if (iArray == null) {
            return "NULL";
        }

        StringBuilder buffer = new StringBuilder();
        buffer.append("[");
        for (int i = 0; i < iArray.length; i++) {
            buffer.append("'").append(iArray[i]).append("'");
            if (i != iArray.length - 1) {
                buffer.append(", ");
            }
        }
        buffer.append("]");

        return buffer.toString();
    }

    /**
     * Returns the string, in single quotes, or "NULL". Intended only for
     * logging.
     *
     * @param s the string
     * @return the string, in single quotes, or the string "null" if it's null.
     */
    public static String toString(String s) {
        if (s == null) {
            return "NULL";
        } else {
            return new StringBuilder(s.length() + 2).append("'").append(s)
                    .append("'").toString();
        }
    }

    /**
     * @return a string representation of the given native array
     */
    public static String toString(int[][] iArray) {
        if (iArray == null) {
            return "NULL";
        }

        StringBuilder buffer = new StringBuilder();
        buffer.append("[");
        for (int i = 0; i < iArray.length; i++) {
            buffer.append("[");
            for (int j = 0; j < iArray[i].length; j++) {
                buffer.append(iArray[i][j]);
                if (j != (iArray[i].length - 1)) {
                    buffer.append(", ");
                }
            }
            buffer.append("]");
            if (i != iArray.length - 1) {
                buffer.append(" ");
            }
        }
        buffer.append("]");
        return buffer.toString();
    }

    /**
     * @return a string representation of the given native array.
     */
    public static String toString(long[][] iArray) {
        if (iArray == null) {
            return "NULL";
        }

        StringBuilder buffer = new StringBuilder();
        buffer.append("[");
        for (int i = 0; i < iArray.length; i++) {
            buffer.append("[");
            for (int j = 0; j < iArray[i].length; j++) {
                buffer.append(iArray[i][j]);
                if (j != (iArray[i].length - 1)) {
                    buffer.append(", ");
                }
            }
            buffer.append("]");
            if (i != iArray.length - 1) {
                buffer.append(" ");
            }
        }
        buffer.append("]");
        return buffer.toString();
    }

    /**
     * @return a String representation of the given object array.
     * The strings are obtained by calling toString() on the
     * underlying objects.
     */
    public static String toString(Object[] obj) {
        if (obj == null) {
            return "NULL";
        }
        StringBuilder tmp = new StringBuilder();
        tmp.append("[");
        for (int i = 0; i < obj.length; i++) {
            tmp.append(obj[i].toString());
            if (i != obj.length - 1) {
                tmp.append(",");
            }
        }
        tmp.append("]");
        return tmp.toString();
    }
}

Related

1. toString(Object obj)
2. toString(float[] iArray)
3. toString(long[] iArray)
4. toString(int[] iArray)
5. toString(String[] iArray)
6. toString(int[][] iArray)
7. toString(long[][] iArray)
8. toString(Object[] obj)
9. toString(float[] iArray)