sf.tools

Class ArrayUtils

java.lang.Object

sf.tools.ArrayUtils

public class ArrayUtils
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static boolean[]	EMPTY_BOOLEAN_ARRAY
static Boolean[]	EMPTY_BOOLEAN_OBJECT_ARRAY
static byte[]	EMPTY_BYTE_ARRAY
static Byte[]	EMPTY_BYTE_OBJECT_ARRAY
static char[]	EMPTY_CHAR_ARRAY
static Character[]	EMPTY_CHARACTER_OBJECT_ARRAY
static Class<?>[]	EMPTY_CLASS_ARRAY
static Date[]	EMPTY_DATE_ARRAY
static double[]	EMPTY_DOUBLE_ARRAY
static Double[]	EMPTY_DOUBLE_OBJECT_ARRAY
static File[]	EMPTY_FILE_ARRAY
static float[]	EMPTY_FLOAT_ARRAY
static Float[]	EMPTY_FLOAT_OBJECT_ARRAY
static int[]	EMPTY_INT_ARRAY
static Integer[]	EMPTY_INTEGER_OBJECT_ARRAY
static long[]	EMPTY_LONG_ARRAY
static Long[]	EMPTY_LONG_OBJECT_ARRAY
static Object[]	EMPTY_OBJECT_ARRAY
static short[]	EMPTY_SHORT_ARRAY
static Short[]	EMPTY_SHORT_OBJECT_ARRAY
static Date[]	EMPTY_SQL_DATE_ARRAY
static Time[]	EMPTY_SQL_TIME_ARRAY
static Timestamp[]	EMPTY_SQL_TIMESTAMP_ARRAY
static String[]	EMPTY_STRING_ARRAY
static URL[]	EMPTY_URL_ARRAY
static int	INDEX_NOT_FOUND

Constructor Summary

Constructors

Constructor and Description
ArrayUtils()

Method Summary

Modifier and Type	Method and Description
static <S,T> T[]	cast(S[] from, Class<T> to) 将一个子类的数组转换为父类的数组
static boolean	contains(boolean[] array, boolean valueToFind)
static boolean	contains(byte[] array, byte valueToFind)
static boolean	contains(char[] array, char valueToFind)
static boolean	contains(double[] array, double valueToFind)
static boolean	contains(double[] array, double valueToFind, double tolerance)
static boolean	contains(float[] array, float valueToFind)
static boolean	contains(int[] array, int valueToFind)
static boolean	contains(long[] array, long valueToFind)
static boolean	contains(Object[] array, Object objectToFind)
static boolean	contains(short[] array, short valueToFind)
static boolean	equals(Object[] a1, Object[] a2) 两个对象数组的比较
static <T> List<T>	filter(T[] source, Predicate<T> filter) 进行数组元素过滤
static int	indexOf(boolean[] array, boolean valueToFind)
static int	indexOf(boolean[] array, boolean valueToFind, int startIndex)
static int	indexOf(byte[] array, byte valueToFind)
static int	indexOf(byte[] array, byte valueToFind, int startIndex)
static int	indexOf(char[] array, char valueToFind)
static int	indexOf(char[] array, char valueToFind, int startIndex)
static int	indexOf(double[] array, double valueToFind)
static int	indexOf(double[] array, double valueToFind, double tolerance)
static int	indexOf(double[] array, double valueToFind, int startIndex)
static int	indexOf(double[] array, double valueToFind, int startIndex, double tolerance)
static int	indexOf(float[] array, float valueToFind)
static int	indexOf(float[] array, float valueToFind, int startIndex)
static int	indexOf(int[] array, int valueToFind)
static int	indexOf(int[] array, int valueToFind, int startIndex)
static int	indexOf(long[] array, long valueToFind)
static int	indexOf(long[] array, long valueToFind, int startIndex)
static int	indexOf(Object[] array, Object objectToFind)
static int	indexOf(Object[] array, Object objectToFind, int startIndex)
static int	indexOf(short[] array, short valueToFind)
static int	indexOf(short[] array, short valueToFind, int startIndex)
static <T> boolean	isEmpty(T[] array)
static <T> boolean	isNotEmpty(T[] array)
static int	lastIndexOf(boolean[] array, boolean valueToFind)
static int	lastIndexOf(boolean[] array, boolean valueToFind, int startIndex)
static int	lastIndexOf(byte[] array, byte valueToFind)
static int	lastIndexOf(byte[] array, byte valueToFind, int startIndex)
static int	lastIndexOf(char[] array, char valueToFind)
static int	lastIndexOf(char[] array, char valueToFind, int startIndex)
static int	lastIndexOf(double[] array, double valueToFind)
static int	lastIndexOf(double[] array, double valueToFind, double tolerance)
static int	lastIndexOf(double[] array, double valueToFind, int startIndex)
static int	lastIndexOf(double[] array, double valueToFind, int startIndex, double tolerance)
static int	lastIndexOf(float[] array, float valueToFind)
static int	lastIndexOf(float[] array, float valueToFind, int startIndex)
static int	lastIndexOf(int[] array, int valueToFind)
static int	lastIndexOf(int[] array, int valueToFind, int startIndex)
static int	lastIndexOf(long[] array, long valueToFind)
static int	lastIndexOf(long[] array, long valueToFind, int startIndex)
static int	lastIndexOf(Object[] array, Object objectToFind)
static int	lastIndexOf(Object[] array, Object objectToFind, int startIndex)
static int	lastIndexOf(short[] array, short valueToFind)
static int	lastIndexOf(short[] array, short valueToFind, int startIndex)
static Object[]	objectToArray(Object obj) Object的数组转换为Object[]数组.
static <T> T[]	removeNull(T[] arr1) 从数组中移除null的元素
static <T> T[]	toArray(Enumeration<T> e, Class<T> type)
static <T> T[]	toArray(List<T> items)
static <T> T[]	toArray(List<T> items, Class<T> clz) 强制拷贝,根据传入的类转换
static Iterable<Character>	toIterable(CharSequence e) 将CharSequence变为可遍历的char对象 这样就可以对CharBuffer,StringBuilder,Stringbuffer等对象进行Iterator模式的遍历了。
static Boolean[]	toObject(boolean[] array)
static Byte[]	toObject(byte[] array)
static Character[]	toObject(char[] array)
static Double[]	toObject(double[] array)
static Float[]	toObject(float[] array)
static Integer[]	toObject(int[] array)
static Long[]	toObject(long[] array)
static Short[]	toObject(short[] array)
static boolean[]	toPrimitive(Boolean[] array)
static boolean[]	toPrimitive(Boolean[] array, boolean valueForNull)
static byte[]	toPrimitive(Byte[] array)
static byte[]	toPrimitive(Byte[] array, byte valueForNull)
static char[]	toPrimitive(Character[] array)
static char[]	toPrimitive(Character[] array, char valueForNull)
static double[]	toPrimitive(Double[] array)
static double[]	toPrimitive(Double[] array, double valueForNull)
static float[]	toPrimitive(Float[] array)
static float[]	toPrimitive(Float[] array, float valueForNull)
static int[]	toPrimitive(Integer[] array)
static int[]	toPrimitive(Integer[] array, int valueForNull)
static long[]	toPrimitive(Long[] array)
static long[]	toPrimitive(Long[] array, long valueForNull)
static short[]	toPrimitive(Short[] array)
static short[]	toPrimitive(Short[] array, short valueForNull)
static String	toString(Object array)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

EMPTY_BOOLEAN_ARRAY

public static final boolean[] EMPTY_BOOLEAN_ARRAY

EMPTY_CHAR_ARRAY

public static final char[] EMPTY_CHAR_ARRAY

EMPTY_BYTE_ARRAY

public static final byte[] EMPTY_BYTE_ARRAY

EMPTY_SHORT_ARRAY

public static final short[] EMPTY_SHORT_ARRAY

EMPTY_INT_ARRAY

public static final int[] EMPTY_INT_ARRAY

EMPTY_LONG_ARRAY

public static final long[] EMPTY_LONG_ARRAY

EMPTY_FLOAT_ARRAY

public static final float[] EMPTY_FLOAT_ARRAY

EMPTY_DOUBLE_ARRAY

public static final double[] EMPTY_DOUBLE_ARRAY

EMPTY_BOOLEAN_OBJECT_ARRAY

public static final Boolean[] EMPTY_BOOLEAN_OBJECT_ARRAY

EMPTY_CHARACTER_OBJECT_ARRAY

public static final Character[] EMPTY_CHARACTER_OBJECT_ARRAY

EMPTY_BYTE_OBJECT_ARRAY

public static final Byte[] EMPTY_BYTE_OBJECT_ARRAY

EMPTY_SHORT_OBJECT_ARRAY

public static final Short[] EMPTY_SHORT_OBJECT_ARRAY

EMPTY_INTEGER_OBJECT_ARRAY

public static final Integer[] EMPTY_INTEGER_OBJECT_ARRAY

EMPTY_LONG_OBJECT_ARRAY

public static final Long[] EMPTY_LONG_OBJECT_ARRAY

EMPTY_FLOAT_OBJECT_ARRAY

public static final Float[] EMPTY_FLOAT_OBJECT_ARRAY

EMPTY_DOUBLE_OBJECT_ARRAY

public static final Double[] EMPTY_DOUBLE_OBJECT_ARRAY

EMPTY_OBJECT_ARRAY

public static final Object[] EMPTY_OBJECT_ARRAY

EMPTY_STRING_ARRAY

public static final String[] EMPTY_STRING_ARRAY

EMPTY_CLASS_ARRAY

public static final Class<?>[] EMPTY_CLASS_ARRAY

EMPTY_DATE_ARRAY

public static final Date[] EMPTY_DATE_ARRAY

EMPTY_SQL_DATE_ARRAY

public static final Date[] EMPTY_SQL_DATE_ARRAY

EMPTY_SQL_TIME_ARRAY

public static final Time[] EMPTY_SQL_TIME_ARRAY

EMPTY_SQL_TIMESTAMP_ARRAY

public static final Timestamp[] EMPTY_SQL_TIMESTAMP_ARRAY

EMPTY_FILE_ARRAY

public static final File[] EMPTY_FILE_ARRAY

EMPTY_URL_ARRAY

public static final URL[] EMPTY_URL_ARRAY

INDEX_NOT_FOUND

public static final int INDEX_NOT_FOUND

See Also:

Constant Field Values

Constructor Detail

ArrayUtils

public ArrayUtils()

Method Detail

objectToArray

public static Object[] objectToArray(Object obj)

Object的数组转换为Object[]数组.

Parameters:

obj -

Returns:

toArray

public static <T> T[] toArray(List<T> items)

toArray

public static <T> T[] toArray(List<T> items,
                              Class<T> clz)

强制拷贝,根据传入的类转换

Type Parameters:

T -

Parameters:

items -

clz -

Returns:

toArray

public static <T> T[] toArray(Enumeration<T> e,
                              Class<T> type)

cast

public static <S,T> T[] cast(S[] from,
                             Class<T> to)

将一个子类的数组转换为父类的数组

Parameters:

from -

to -

Returns:

removeNull

public static <T> T[] removeNull(T[] arr1)

从数组中移除null的元素

Type Parameters:

T -

Parameters:

arr1 -

Returns:

toIterable

public static Iterable<Character> toIterable(CharSequence e)

将CharSequence变为可遍历的char对象 这样就可以对CharBuffer,StringBuilder,Stringbuffer等对象进行Iterator模式的遍历了。

Parameters:

e -

Returns:

filter

public static <T> List<T> filter(T[] source,
                                 Predicate<T> filter)

进行数组元素过滤

Parameters:

source -

filter -

Returns:

equals

public static boolean equals(Object[] a1,
                             Object[] a2)

两个对象数组的比较

contains

public static boolean contains(boolean[] array,
                               boolean valueToFind)

contains

public static boolean contains(byte[] array,
                               byte valueToFind)

contains

public static boolean contains(char[] array,
                               char valueToFind)

contains

public static boolean contains(double[] array,
                               double valueToFind)

contains

public static boolean contains(double[] array,
                               double valueToFind,
                               double tolerance)

contains

public static boolean contains(float[] array,
                               float valueToFind)

contains

public static boolean contains(int[] array,
                               int valueToFind)

contains

public static boolean contains(long[] array,
                               long valueToFind)

contains

public static boolean contains(Object[] array,
                               Object objectToFind)

contains

public static boolean contains(short[] array,
                               short valueToFind)

indexOf

public static int indexOf(boolean[] array,
                          boolean valueToFind)

indexOf

public static int indexOf(boolean[] array,
                          boolean valueToFind,
                          int startIndex)

indexOf

public static int indexOf(byte[] array,
                          byte valueToFind)

indexOf

public static int indexOf(byte[] array,
                          byte valueToFind,
                          int startIndex)

indexOf

public static int indexOf(char[] array,
                          char valueToFind)

indexOf

public static int indexOf(char[] array,
                          char valueToFind,
                          int startIndex)

indexOf

public static int indexOf(double[] array,
                          double valueToFind)

indexOf

public static int indexOf(double[] array,
                          double valueToFind,
                          double tolerance)

indexOf

public static int indexOf(double[] array,
                          double valueToFind,
                          int startIndex)

indexOf

public static int indexOf(double[] array,
                          double valueToFind,
                          int startIndex,
                          double tolerance)

indexOf

public static int indexOf(float[] array,
                          float valueToFind)

indexOf

public static int indexOf(float[] array,
                          float valueToFind,
                          int startIndex)

indexOf

public static int indexOf(int[] array,
                          int valueToFind)

indexOf

public static int indexOf(int[] array,
                          int valueToFind,
                          int startIndex)

indexOf

public static int indexOf(long[] array,
                          long valueToFind)

indexOf

public static int indexOf(long[] array,
                          long valueToFind,
                          int startIndex)

indexOf

public static int indexOf(Object[] array,
                          Object objectToFind)

indexOf

public static int indexOf(Object[] array,
                          Object objectToFind,
                          int startIndex)

indexOf

public static int indexOf(short[] array,
                          short valueToFind)

indexOf

public static int indexOf(short[] array,
                          short valueToFind,
                          int startIndex)

lastIndexOf

public static int lastIndexOf(boolean[] array,
                              boolean valueToFind)

lastIndexOf

public static int lastIndexOf(boolean[] array,
                              boolean valueToFind,
                              int startIndex)

lastIndexOf

public static int lastIndexOf(byte[] array,
                              byte valueToFind)

lastIndexOf

public static int lastIndexOf(byte[] array,
                              byte valueToFind,
                              int startIndex)

lastIndexOf

public static int lastIndexOf(char[] array,
                              char valueToFind)

lastIndexOf

public static int lastIndexOf(char[] array,
                              char valueToFind,
                              int startIndex)

lastIndexOf

public static int lastIndexOf(double[] array,
                              double valueToFind)

lastIndexOf

public static int lastIndexOf(double[] array,
                              double valueToFind,
                              double tolerance)

lastIndexOf

public static int lastIndexOf(double[] array,
                              double valueToFind,
                              int startIndex)

lastIndexOf

public static int lastIndexOf(double[] array,
                              double valueToFind,
                              int startIndex,
                              double tolerance)

lastIndexOf

public static int lastIndexOf(float[] array,
                              float valueToFind)

lastIndexOf

public static int lastIndexOf(float[] array,
                              float valueToFind,
                              int startIndex)

lastIndexOf

public static int lastIndexOf(int[] array,
                              int valueToFind)

lastIndexOf

public static int lastIndexOf(int[] array,
                              int valueToFind,
                              int startIndex)

lastIndexOf

public static int lastIndexOf(long[] array,
                              long valueToFind)

lastIndexOf

public static int lastIndexOf(long[] array,
                              long valueToFind,
                              int startIndex)

lastIndexOf

public static int lastIndexOf(Object[] array,
                              Object objectToFind)

lastIndexOf

public static int lastIndexOf(Object[] array,
                              Object objectToFind,
                              int startIndex)

lastIndexOf

public static int lastIndexOf(short[] array,
                              short valueToFind)

lastIndexOf

public static int lastIndexOf(short[] array,
                              short valueToFind,
                              int startIndex)

toObject

public static Boolean[] toObject(boolean[] array)

toObject

public static Byte[] toObject(byte[] array)

toObject

public static Character[] toObject(char[] array)

toObject

public static Double[] toObject(double[] array)

toObject

public static Float[] toObject(float[] array)

toObject

public static Integer[] toObject(int[] array)

toObject

public static Long[] toObject(long[] array)

toObject

public static Short[] toObject(short[] array)

toPrimitive

public static boolean[] toPrimitive(Boolean[] array)

toPrimitive

public static boolean[] toPrimitive(Boolean[] array,
                                    boolean valueForNull)

toPrimitive

public static byte[] toPrimitive(Byte[] array)

toPrimitive

public static byte[] toPrimitive(Byte[] array,
                                 byte valueForNull)

toPrimitive

public static char[] toPrimitive(Character[] array)

toPrimitive

public static char[] toPrimitive(Character[] array,
                                 char valueForNull)

toPrimitive

public static double[] toPrimitive(Double[] array)

toPrimitive

public static double[] toPrimitive(Double[] array,
                                   double valueForNull)

toPrimitive

public static float[] toPrimitive(Float[] array)

toPrimitive

public static float[] toPrimitive(Float[] array,
                                  float valueForNull)

toPrimitive

public static int[] toPrimitive(Integer[] array)

toPrimitive

public static int[] toPrimitive(Integer[] array,
                                int valueForNull)

toPrimitive

public static long[] toPrimitive(Long[] array)

toPrimitive

public static long[] toPrimitive(Long[] array,
                                 long valueForNull)

toPrimitive

public static short[] toPrimitive(Short[] array)

toPrimitive

public static short[] toPrimitive(Short[] array,
                                  short valueForNull)

toString

public static String toString(Object array)

isNotEmpty

public static <T> boolean isNotEmpty(T[] array)

isEmpty

public static <T> boolean isEmpty(T[] array)