将数组转换为字符串数组。
// Copyright (c) 2003-present, Jodd Team (jodd.org). All Rights Reserved. import java.lang.reflect.Array; import static jodd.util.StringPool.NULL; /** N o w J a v a . c o m 提供 **/ public class Main{ public static void main(String[] argv) throws Exception{ Object[] array = new String[]{"1","abc","level",null,"nowjava.com","asdf 123"}; System.out.println(java.util.Arrays.toString(toStringArray(array))); } /** * Converts an array to string array. */ public static String[] toStringArray(Object[] array) { if (array == null) { return null; } String[] result = new String[array.length]; for (int i = 0; i < array.length; i++) { result[i] = StringUtil.toString(array[i]); } return result; }// from 时代Java公众号 - N o w J a v a . c o m /** * Converts an array to string array. */ public static String[] toStringArray(String[] array) { if (array == null) { return null; } String[] result = new String[array.length]; for (int i = 0; i < array.length; i++) { result[i] = String.valueOf(array[i]); } return result; } /** * Converts an array to string array. */ public static String[] toStringArray(byte[] array) { if (array == null) { return null; } String[] result = new String[array.length]; for (int i = 0; i < array.length; i++) { result[i] = String.valueOf(array[i]); } return result; } /** * Converts an array to string array. */ public static String[] toStringArray(char[] array) { if (array == null) { return null; } String[] result = new String[array.length]; for (int i = 0; i < array.length; i++) { result[i] = String.valueOf(array[i]); } return result; } /** * Converts an array to string array. */ public static String[] toStringArray(short[] array) { if (array == null) { return null; } String[] result = new String[array.length]; for (int i = 0; i < array.length; i++) { result[i] = String.valueOf(array[i]); } return result; } /** * Converts an array to string array. */ public static String[] toStringArray(int[] array) { if (array == null) { return null; } String[] result = new String[array.length]; for (int i = 0; i < array.length; i++) { result[i] = String.valueOf(array[i]); } return result; } /** * Converts an array to string array. */ public static String[] toStringArray(long[] array) { if (array == null) { return null; } String[] result = new String[array.length]; for (int i = 0; i < array.length; i++) { result[i] = String.valueOf(array[i]); } return result; } /** * Converts an array to string array. */ public static String[] toStringArray(float[] array) { if (array == null) { return null; } String[] result = new String[array.length]; for (int i = 0; i < array.length; i++) { result[i] = String.valueOf(array[i]); } return result; } /** * Converts an array to string array. */ public static String[] toStringArray(double[] array) { if (array == null) { return null; } String[] result = new String[array.length]; for (int i = 0; i < array.length; i++) { result[i] = String.valueOf(array[i]); } return result; } /** * Converts an array to string array. */ public static String[] toStringArray(boolean[] array) { if (array == null) { return null; } String[] result = new String[array.length]; for (int i = 0; i < array.length; i++) { result[i] = String.valueOf(array[i]); } return result; } /** * Converts an array to string. Elements are separated by comma. * Returned string contains no brackets. */ public static String toString(Object[] array) { if (array == null) { return NULL; } StringBuilder sb = new StringBuilder(); for (int i = 0; i < array.length; i++) { if (i != 0) { sb.append(','); } sb.append(array[i]); } return sb.toString(); } /** * Converts an array to string. Elements are separated by comma. * Returned string contains no brackets. */ public static String toString(String[] array) { if (array == null) { return NULL; } StringBuilder sb = new StringBuilder(); for (int i = 0; i < array.length; i++) { if (i != 0) { sb.append(','); } sb.append(array[i]); } return sb.toString(); } /** * Converts an array to string. Elements are separated by comma. * Returned string contains no brackets. */ public static String toString(byte[] array) { if (array == null) { return NULL; } StringBuilder sb = new StringBuilder(); for (int i = 0; i < array.length; i++) { if (i != 0) { sb.append(','); } sb.append(array[i]); } return sb.toString(); } /** * Converts an array to string. Elements are separated by comma. * Returned string contains no brackets. */ public static String toString(char[] array) { if (array == null) { return NULL; } StringBuilder sb = new StringBuilder(); for (int i = 0; i < array.length; i++) { if (i != 0) { sb.append(','); } sb.append(array[i]); } return sb.toString(); } /** * Converts an array to string. Elements are separated by comma. * Returned string contains no brackets. */ public static String toString(short[] array) { if (array == null) { return NULL; } StringBuilder sb = new StringBuilder(); for (int i = 0; i < array.length; i++) { if (i != 0) { sb.append(','); } sb.append(array[i]); } return sb.toString(); } /** * Converts an array to string. Elements are separated by comma. * Returned string contains no brackets. */ public static String toString(int[] array) { if (array == null) { return NULL; } StringBuilder sb = new StringBuilder(); for (int i = 0; i < array.length; i++) { if (i != 0) { sb.append(','); } sb.append(array[i]); } return sb.toString(); } /** * Converts an array to string. Elements are separated by comma. * Returned string contains no brackets. */ public static String toString(long[] array) { if (array == null) { return NULL; } StringBuilder sb = new StringBuilder(); for (int i = 0; i < array.length; i++) { if (i != 0) { sb.append(','); } sb.append(array[i]); } return sb.toString(); } /** * Converts an array to string. Elements are separated by comma. * Returned string contains no brackets. */ public static String toString(float[] array) { if (array == null) { return NULL; } StringBuilder sb = new StringBuilder(); for (int i = 0; i < array.length; i++) { if (i != 0) { sb.append(','); } sb.append(array[i]); } return sb.toString(); } /** * Converts an array to string. Elements are separated by comma. * Returned string contains no brackets. */ public static String toString(double[] array) { if (array == null) { return NULL; } StringBuilder sb = new StringBuilder(); for (int i = 0; i < array.length; i++) { if (i != 0) { sb.append(','); } sb.append(array[i]); } return sb.toString(); } /** * Converts an array to string. Elements are separated by comma. * Returned string contains no brackets. */ public static String toString(boolean[] array) { if (array == null) { return NULL; } StringBuilder sb = new StringBuilder(); for (int i = 0; i < array.length; i++) { if (i != 0) { sb.append(','); } sb.append(array[i]); } return sb.toString(); } /** * Appends an element to array. */ public static <T> T[] append(T[] buffer, T newElement) { T[] t = resize(buffer, buffer.length + 1); t[buffer.length] = newElement; return t; } /** * Appends an element to <code>String</code> array. */ public static String[] append(String buffer[], String newElement) { String[] t = resize(buffer, buffer.length + 1); t[buffer.length] = newElement; return t; } /** * Appends an element to <code>byte</code> array. */ public static byte[] append(byte buffer[], byte newElement) { byte[] t = resize(buffer, buffer.length + 1); t[buffer.length] = newElement; return t; } /** * Appends an element to <code>char</code> array. */ public static char[] append(char buffer[], char newElement) { char[] t = resize(buffer, buffer.length + 1); t[buffer.length] = newElement; return t; } /** * Appends an element to <code>short</code> array. */ public static short[] append(short buffer[], short newElement) { short[] t = resize(buffer, buffer.length + 1); t[buffer.length] = newElement; return t; } /** * Appends an element to <code>int</code> array. */ public static int[] append(int buffer[], int newElement) { int[] t = resize(buffer, buffer.length + 1); t[buffer.length] = newElement; return t; } /** * Appends an element to <code>long</code> array. */ public static long[] append(long buffer[], long newElement) { long[] t = resize(buffer, buffer.length + 1); t[buffer.length] = newElement; return t; } /** * Appends an element to <code>float</code> array. */ public static float[] append(float buffer[], float newElement) { float[] t = resize(buffer, buffer.length + 1); t[buffer.length] = newElement; return t; } /** * Appends an element to <code>double</code> array. */ public static double[] append(double buffer[], double newElement) { double[] t = resize(buffer, buffer.length + 1); t[buffer.length] = newElement; return t; } /** * Appends an element to <code>boolean</code> array. */ public static boolean[] append(boolean buffer[], boolean newElement) { boolean[] t = resize(buffer, buffer.length + 1); t[buffer.length] = newElement; return t; } /** * Resizes an array. */ public static <T> T[] resize(T[] buffer, int newSize) { Class<T> componentType = (Class<T>) buffer.getClass() .getComponentType(); T[] temp = (T[]) Array.newInstance(componentType, newSize); System.arraycopy(buffer, 0, temp, 0, buffer.length >= newSize ? newSize : buffer.length); return temp; } /** * Resizes a <code>String</code> array. */ public static String[] resize(String buffer[], int newSize) { String temp[] = new String[newSize]; System.arraycopy(buffer, 0, temp, 0, buffer.length >= newSize ? newSize : buffer.length); return temp; } /** * Resizes a <code>byte</code> array. */ public static byte[] resize(byte buffer[], int newSize) { byte temp[] = new byte[newSize]; System.arraycopy(buffer, 0, temp, 0, buffer.length >= newSize ? newSize : buffer.length); return temp; } /** * Resizes a <code>char</code> array. */ public static