如果数组包含给定值，则返回true。
// Copyright (c) 2003-present, Jodd Team (jodd.org). All Rights Reserved. /*来自 N o w J a v a . c o m - 时 代 Java*/ import java.lang.reflect.Array; import static jodd.util.StringPool.NULL; public class Main{ public static void main(String[] argv) throws Exception{ byte[] array = new byte[]{34,35,36,37,37,37,67,68,69}; byte value = 2; System.out.println(contains(array,value)); } /** * Returns <code>true</code> if an array contains given value. */ public static boolean contains(byte[] array, byte value) { return indexOf(array, value) != -1; } /** * Returns <code>true</code> if an array contains given value. *//** from nowjava - 时 代 Java**/ public static boolean contains(char[] array, char value) { return indexOf(array, value) != -1; } /** * Returns <code>true</code> if an array contains given value. */ public static boolean contains(short[] array, short value) { return indexOf(array, value) != -1; } /** * Returns <code>true</code> if an array contains given value. */ public static boolean contains(int[] array, int value) { return indexOf(array, value) != -1; } /** * Returns <code>true</code> if an array contains given value. */ public static boolean contains(long[] array, long value) { return indexOf(array, value) != -1; } /** * Returns <code>true</code> if an array contains given value. */ public static boolean contains(boolean[] array, boolean value) { return indexOf(array, value) != -1; } /** * Returns <code>true</code> if <code>float</code> array contains given value. */ public static boolean contains(float[] array, float value) { return indexOf(array, value) != -1; } /** * Returns <code>true</code> if <code>double</code> array contains given value. */ public static boolean contains(double[] array, double value) { return indexOf(array, value) != -1; } public static boolean contains(Object[] array, Object value) { return indexOf(array, value) != -1; } public static boolean contains(Object[] array, Object value, int startIndex) { return indexOf(array, value, startIndex) != -1; } public static boolean contains(byte[] array, byte[] sub) { return indexOf(array, sub) != -1; } public static boolean contains(char[] array, char[] sub) { return indexOf(array, sub) != -1; } public static boolean contains(short[] array, short[] sub) { return indexOf(array, sub) != -1; } public static boolean contains(int[] array, int[] sub) { return indexOf(array, sub) != -1; } public static boolean contains(long[] array, long[] sub) { return indexOf(array, sub) != -1; } public static boolean contains(boolean[] array, boolean[] sub) { return indexOf(array, sub) != -1; } public static boolean contains(float[] array, float[] sub) { return indexOf(array, sub) != -1; } public static boolean contains(double[] array, double[] sub) { return indexOf(array, sub) != -1; } /** * Finds the first occurrence of an element in an array. */ public static int indexOf(byte[] array, byte value) { for (int i = 0; i < array.length; i++) { if (array[i] == value) { return i; } } return -1; } /** * Finds the first occurrence of given value in an array from specified given position. */ public static int indexOf(byte[] array, byte value, int startIndex) { for (int i = startIndex; i < array.length; i++) { if (array[i] == value) { return i; } } return -1; } /** * Finds the first occurrence in an array from specified given position and upto given length. */ public static int indexOf(byte[] array, byte value, int startIndex, int endIndex) { for (int i = startIndex; i < endIndex; i++) { if (array[i] == value) { return i; } } return -1; } /** * Finds the first occurrence of an element in an array. */ public static int indexOf(char[] array, char value) { for (int i = 0; i < array.length; i++) { if (array[i] == value) { return i; } } return -1; } /** * Finds the first occurrence of given value in an array from specified given position. */ public static int indexOf(char[] array, char value, int startIndex) { for (int i = startIndex; i < array.length; i++) { if (array[i] == value) { return i; } } return -1; } /** * Finds the first occurrence in an array from specified given position and upto given length. */ public static int indexOf(char[] array, char value, int startIndex, int endIndex) { for (int i = startIndex; i < endIndex; i++) { if (array[i] == value) { return i; } } return -1; } /** * Finds the first occurrence of an element in an array. */ public static int indexOf(short[] array, short value) { for (int i = 0; i < array.length; i++) { if (array[i] == value) { return i; } } return -1; } /** * Finds the first occurrence of given value in an array from specified given position. */ public static int indexOf(short[] array, short value, int startIndex) { for (int i = startIndex; i < array.length; i++) { if (array[i] == value) { return i; } } return -1; } /** * Finds the first occurrence in an array from specified given position and upto given length. */ public static int indexOf(short[] array, short value, int startIndex, int endIndex) { for (int i = startIndex; i < endIndex; i++) { if (array[i] == value) { return i; } } return -1; } /** * Finds the first occurrence of an element in an array. */ public static int indexOf(int[] array, int value) { for (int i = 0; i < array.length; i++) { if (array[i] == value) { return i; } } return -1; } /** * Finds the first occurrence of given value in an array from specified given position. */ public static int indexOf(int[] array, int value, int startIndex) { for (int i = startIndex; i < array.length; i++) { if (array[i] == value) { return i; } } return -1; } /** * Finds the first occurrence in an array from specified given position and upto given length. */ public static int indexOf(int[] array, int value, int startIndex, int endIndex) { for (int i = startIndex; i < endIndex; i++) { if (array[i] == value) { return i; } } return -1; } /** * Finds the first occurrence of an element in an array. */ public static int indexOf(long[] array, long value) { for (int i = 0; i < array.length; i++) { if (array[i] == value) { return i; } } return -1; } /** * Finds the first occurrence of given value in an array from specified given position. */ public static int indexOf(long[] array, long value, int startIndex) { for (int i = startIndex; i < array.length; i++) { if (array[i] == value) { return i; } } return -1; } /** * Finds the first occurrence in an array from specified given position and upto given length. */ public static int indexOf(long[] array, long value, int startIndex, int endIndex) { for (int i = startIndex; i < endIndex; i++) { if (array[i] == value) { return i; } } return -1; } /** * Finds the first occurrence of an element in an array. */ public static int indexOf(boolean[] array, boolean value) { for (int i = 0; i < array.length; i++) { if (array[i] == value) { return i; } } return -1; } /** * Finds the first occurrence of given value in an array from specified given position. */ public static int indexOf(boolean[] array, boolean value, int startIndex) { for (int i = startIndex; i < array.length; i++) { if (array[i] == value) { return i; } } return -1; } /** * Finds the first occurrence in an array from specified given position and upto given length. */ public static int indexOf(boolean[] array, boolean value, int startIndex, int endIndex) { for (int i = startIndex; i < endIndex; i++) { if (array[i] == value) { return i; } } return -1; } /** * Finds the first occurrence of value in <code>float</code> array. */ public static int indexOf(float[] array, float value) { for (int i = 0; i < array.length; i++) { if (Float.compare(array[i], value) == 0) { return i; } } return -1; } /** * Finds the first occurrence of given value in <code>float</code> * array from specified given position. */ public static int indexOf(float[] array, float value, int startIndex) { for (int i = startIndex; i < array.length; i++) { if (Float.compare(array[i], value) == 0) { return i; } } return -1; } /** * Finds the first occurrence in <code>float</code> array from specified given position and upto given length. */ public static int indexOf(float[] array, float value, int startIndex, int endIndex) { for (int i = startIndex; i < endIndex; i++) { if (Float.compare(array[i], value) == 0) { return i; } } return -1; } /** * Finds the first occurrence of value in <code>double</code> array. */ public static int indexOf(double[] array, double value) { for (int i = 0; i < array.length; i++) { if (Double.compare(array[i], value) == 0) { return i; } } return -1; } /** * Finds the first occurrence of given value in <code>double</code> * array from specified given position. */ public static int indexOf(double[] array, double value, int startIndex) { for (int i = startIndex; i < array.length; i++) { if (Double.compare(array[i], value) == 0) { return i; } } return -1; } /** * Finds the first occurrence in <code>double</code> array from specified given position and upto given length. */ public static int indexOf(double[] array, double value, int startIndex, int endIndex) { for (int i = startIndex; i < endIndex; i++) { if (Double.compare(array[i], value) == 0) { return i; } } return -1; } /** * Finds the first occurrence in an array. */ public static int indexOf(Object[] array, Object value) { for (int i = 0; i < array.length; i++) { if (array[i].equals(value)) { return i; } } return -1; } /** * Finds the first occurrence in an array from specified given position. */ public static int indexOf(Object[] array, Object value, int startIndex) { for (int i = startIndex; i < array.length; i++) { if (array[i].equals(value)) { return i; } } return -1; } /** * Finds the first occurrence in an array. */ public static int indexOf(byte[] array, byte[] sub) { return indexOf(array, sub, 0, array.length); } /** * Finds the first occurrence in an array from specified given position. */ public static int indexOf(byte[] array, byte[] sub, int startIndex) { return indexOf(array, sub, startIndex, array.length); } /** * Finds the first occurrence in an array from specified given position and upto given length. */ public static int indexOf(byte[] array, byte[] sub, int startIndex, int endIndex) { int sublen = sub.length; if (sublen == 0) { return startIndex; } int total = endIndex - sublen + 1; byte c = sub[0]; mainloop: for (int i = startIndex; i < total; i++) { if (array[i] != c) { continue; } int j = 1; int k = i + 1; while (j < sublen) { if (sub[j] != array[k]) { continue mainloop; } j++; k++; } return i; } return -1; } /** * Finds the first occurrence in an array. */ public static int indexOf(char[] array, char[] sub) { return indexOf(array, sub, 0, array.length); } /** * Finds the first occurrence in an array from specified given position. */ public static int indexOf(char[] array, char[] sub, int startIndex) { return indexOf(array, sub, startIndex, array.length); } /** * Finds the first occurrence in an array from specified given position and upto given length. */ public static int indexOf(char[] array, char[] sub, int startIndex, int endIndex) { int sublen = sub.length; if (sublen == 0) { return startIndex; } int total = endIndex - sublen + 1; char c = sub[0]; mainloop: for (int i = startIndex; i < total; i++) { if (array[i] != c) { continue; } int j = 1; int k = i + 1; while (j < sublen) { if (sub[j] != array[k]) { continue mainloop; } j++; k++; } return i; } return -1; } /** * Finds the first occurrence in an array. */ public static int indexOf(short[] array, short[] sub) { return indexOf(array, sub, 0, array.length); } /** * Finds the first occurrence in an array from specified given position. */ public static int indexOf(short[] array, short[] sub, int startIndex) { return indexOf(array, sub, startIndex, array.length); } /** * Finds the first occurrence in an array from specified given position and upto given length. */ public static int indexOf(short[] array, short[] sub, int startIndex, int endIndex) { int sublen = sub.length; if (sublen == 0) { return startIndex; } int total = endIndex - sublen + 1; short c = sub[0]; mainloop: for (int i = startIndex; i < total; i++) { if (array[i] != c) { continue; } int j = 1; int k = i + 1; while (j < sublen) { if (sub[j] != array[k]) { continue mainloop; } j++; k++; } return i; } return -1; } /** * Finds the first occurrence in an array. */ public static int indexOf(int[] array, int[] sub) { return indexOf(array, sub, 0, array.length); } /** * Finds the first occurrence in an array from specified given position. */ public static int indexOf(int[] array, int[] sub, int startIndex) { return indexOf(array, sub, startIndex, array.length); } /** * Finds the first occurrence in an array from specified given position and upto given length. */ public static int indexOf(int[] array, int[] sub, int startIndex, int endIndex) { int sublen = sub.length; if (sublen == 0) { return startIndex; } int total = endIndex - sublen + 1; int c = sub[0]; mainloop: for (int i = startIndex; i < total; i++) { if (array[i] != c) { continue; } int j = 1; int k = i + 1; while (j < sublen) { if (sub[j] != array[k]) { continue mainloop; } j++; k++; } return i; } return -1; } /** * Finds the first occurrence in an array. */ public static int indexOf(long[] array, long[] sub) { return indexOf(array, sub, 0, array.length); } /** * Finds the first occurrence in an array from specified given position. */ public static int indexOf(long[] array, long[] sub, int startIndex) { return indexOf(array, sub, startIndex, array.length); } /** * Finds the first occurrence in an array from specified given position and upto given length. */ public static int indexOf(long[] array, long[] sub, int startIndex, int endIndex) { int sublen = sub.length; if (sublen == 0) { return startIndex; } int total = endIndex - sublen + 1; long c = sub[0]; mainloop: for (int i = startIndex; i < total; i++) { if (array[i] != c) { continue; } int j = 1; int k = i + 1; while (j < sublen) { if (sub[j] != array[k]) { continue mainloop; } j++; k++; } return i; } return -1; } /** * Finds the first occurrence in an array. */ public static int indexOf(boolean[] array, boolean[] sub) { return indexOf(array, sub, 0, array.length); } /** * Finds the first occurrence in an array from specified given position. */ public static