/src/main/java/com/wcs/base/util/ObjectUtils.java
Java | 991 lines | 576 code | 56 blank | 359 comment | 222 complexity | 870ca2d065f5273cab43d809454bc11f MD5 | raw file
- /*
- * Copyright 2002-2009 the original author or authors.
- *
- * 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.
- */
- package com.wcs.base.util;
- import java.lang.reflect.Array;
- import java.util.Arrays;
- import java.util.Collection;
- import java.util.regex.Matcher;
- import java.util.regex.Pattern;
- /**
- * Miscellaneous object utility methods.
- *
- * <p>
- * Mainly for internal use within the framework; consider <a
- * href="http://jakarta.apache.org/commons/lang/">Jakarta's Commons Lang</a> for
- * a more comprehensive suite of object utilities.
- *
- * <p>
- * Thanks to Alex Ruiz for contributing several enhancements to this class!
- *
- * @author Juergen Hoeller
- * @author Keith Donald
- * @author Rod Johnson
- * @author Rob Harrop
- * @since 19.03.2004
- * @see org.apache.commons.lang.ObjectUtils
- */
- public abstract class ObjectUtils extends org.apache.commons.lang.ObjectUtils {
- private static final int INITIAL_HASH = 7;
- private static final int MULTIPLIER = 31;
- private static final String EMPTY_STRING = "";
- private static final String NULL_STRING = "null";
- private static final String ARRAY_START = "{";
- private static final String ARRAY_END = "}";
- private static final String EMPTY_ARRAY = ARRAY_START + ARRAY_END;
- private static final String ARRAY_ELEMENT_SEPARATOR = ", ";
- /**
- * Return whether the given throwable is a checked exception: that is,
- * neither a RuntimeException nor an Error.
- *
- * @param ex
- * the throwable to check
- * @return whether the throwable is a checked exception
- * @see java.lang.Exception
- * @see java.lang.RuntimeException
- * @see java.lang.Error
- */
- public static boolean isCheckedException(Throwable ex) {
- return !(ex instanceof RuntimeException || ex instanceof Error);
- }
- /**
- * Check whether the given exception is compatible with the exceptions
- * declared in a throws clause.
- *
- * @param ex
- * the exception to checked
- * @param declaredExceptions
- * the exceptions declared in the throws clause
- * @return whether the given exception is compatible
- */
- public static boolean isCompatibleWithThrowsClause(Throwable ex,
- Class[] declaredExceptions) {
- if (!isCheckedException(ex)) {
- return true;
- }
- if (declaredExceptions != null) {
- int i = 0;
- while (i < declaredExceptions.length) {
- if (declaredExceptions[i].isAssignableFrom(ex.getClass())) {
- return true;
- }
- i++;
- }
- }
- return false;
- }
- /**
- * Determine whether the given object is an array: either an Object array or
- * a primitive array.
- *
- * @param obj
- * the object to check
- */
- public static boolean isArray(Object obj) {
- return (obj != null && obj.getClass().isArray());
- }
- /**
- * Determine whether the given array is empty: i.e. <code>null</code> or of
- * zero length.
- *
- * @param array
- * the array to check
- */
- public static boolean isEmpty(Object[] array) {
- return (array == null || array.length == 0);
- }
- /**
- * Check whether the given array contains the given element.
- *
- * @param array
- * the array to check (may be <code>null</code>, in which case
- * the return value will always be <code>false</code>)
- * @param element
- * the element to check for
- * @return whether the element has been found in the given array
- */
- public static boolean containsElement(Object[] array, Object element) {
- if (array == null) {
- return false;
- }
- for (Object arrayEle : array) {
- if (nullSafeEquals(arrayEle, element)) {
- return true;
- }
- }
- return false;
- }
- /**
- * Append the given Object to the given array, returning a new array
- * consisting of the input array contents plus the given Object.
- *
- * @param array
- * the array to append to (can be <code>null</code>)
- * @param obj
- * the Object to append
- * @return the new array (of the same component type; never
- * <code>null</code>)
- */
- public static Object[] addObjectToArray(Object[] array, Object obj) {
- Class compType = Object.class;
- if (array != null) {
- compType = array.getClass().getComponentType();
- } else if (obj != null) {
- compType = obj.getClass();
- }
- int newArrLength = (array != null ? array.length + 1 : 1);
- Object[] newArr = (Object[]) Array.newInstance(compType, newArrLength);
- if (array != null) {
- System.arraycopy(array, 0, newArr, 0, array.length);
- }
- newArr[newArr.length - 1] = obj;
- return newArr;
- }
- /**
- * Convert the given array (which may be a primitive array) to an object
- * array (if necessary of primitive wrapper objects).
- * <p>
- * A <code>null</code> source value will be converted to an empty Object
- * array.
- *
- * @param source
- * the (potentially primitive) array
- * @return the corresponding object array (never <code>null</code>)
- * @throws IllegalArgumentException
- * if the parameter is not an array
- */
- public static Object[] toObjectArray(Object source) {
- if (source instanceof Object[]) {
- return (Object[]) source;
- }
- if (source == null) {
- return new Object[0];
- }
- if (!source.getClass().isArray()) {
- throw new IllegalArgumentException("Source is not an array: "
- + source);
- }
- int length = Array.getLength(source);
- if (length == 0) {
- return new Object[0];
- }
- Class wrapperType = Array.get(source, 0).getClass();
- Object[] newArray = (Object[]) Array.newInstance(wrapperType, length);
- for (int i = 0; i < length; i++) {
- newArray[i] = Array.get(source, i);
- }
- return newArray;
- }
- // ---------------------------------------------------------------------
- // Convenience methods for content-based equality/hash-code handling
- // ---------------------------------------------------------------------
- /**
- * Determine if the given objects are equal, returning <code>true</code> if
- * both are <code>null</code> or <code>false</code> if only one is
- * <code>null</code>.
- * <p>
- * Compares arrays with <code>Arrays.equals</code>, performing an equality
- * check based on the array elements rather than the array reference.
- *
- * @param o1
- * first Object to compare
- * @param o2
- * second Object to compare
- * @return whether the given objects are equal
- * @see java.util.Arrays#equals
- */
- public static boolean nullSafeEquals(Object o1, Object o2) {
- if (o1 == o2) {
- return true;
- }
- if (o1 == null || o2 == null) {
- return false;
- }
- if (o1.equals(o2)) {
- return true;
- }
- if (o1.getClass().isArray() && o2.getClass().isArray()) {
- if (o1 instanceof Object[] && o2 instanceof Object[]) {
- return Arrays.equals((Object[]) o1, (Object[]) o2);
- }
- if (o1 instanceof boolean[] && o2 instanceof boolean[]) {
- return Arrays.equals((boolean[]) o1, (boolean[]) o2);
- }
- if (o1 instanceof byte[] && o2 instanceof byte[]) {
- return Arrays.equals((byte[]) o1, (byte[]) o2);
- }
- if (o1 instanceof char[] && o2 instanceof char[]) {
- return Arrays.equals((char[]) o1, (char[]) o2);
- }
- if (o1 instanceof double[] && o2 instanceof double[]) {
- return Arrays.equals((double[]) o1, (double[]) o2);
- }
- if (o1 instanceof float[] && o2 instanceof float[]) {
- return Arrays.equals((float[]) o1, (float[]) o2);
- }
- if (o1 instanceof int[] && o2 instanceof int[]) {
- return Arrays.equals((int[]) o1, (int[]) o2);
- }
- if (o1 instanceof long[] && o2 instanceof long[]) {
- return Arrays.equals((long[]) o1, (long[]) o2);
- }
- if (o1 instanceof short[] && o2 instanceof short[]) {
- return Arrays.equals((short[]) o1, (short[]) o2);
- }
- }
- return false;
- }
- /**
- * Return as hash code for the given object; typically the value of
- * <code>{@link Object#hashCode()}</code>. If the object is an array, this
- * method will delegate to any of the <code>nullSafeHashCode</code> methods
- * for arrays in this class. If the object is <code>null</code>, this method
- * returns 0.
- *
- * @see #nullSafeHashCode(Object[])
- * @see #nullSafeHashCode(boolean[])
- * @see #nullSafeHashCode(byte[])
- * @see #nullSafeHashCode(char[])
- * @see #nullSafeHashCode(double[])
- * @see #nullSafeHashCode(float[])
- * @see #nullSafeHashCode(int[])
- * @see #nullSafeHashCode(long[])
- * @see #nullSafeHashCode(short[])
- */
- public static int nullSafeHashCode(Object obj) {
- if (obj == null) {
- return 0;
- }
- if (obj.getClass().isArray()) {
- if (obj instanceof Object[]) {
- return nullSafeHashCode((Object[]) obj);
- }
- if (obj instanceof boolean[]) {
- return nullSafeHashCode((boolean[]) obj);
- }
- if (obj instanceof byte[]) {
- return nullSafeHashCode((byte[]) obj);
- }
- if (obj instanceof char[]) {
- return nullSafeHashCode((char[]) obj);
- }
- if (obj instanceof double[]) {
- return nullSafeHashCode((double[]) obj);
- }
- if (obj instanceof float[]) {
- return nullSafeHashCode((float[]) obj);
- }
- if (obj instanceof int[]) {
- return nullSafeHashCode((int[]) obj);
- }
- if (obj instanceof long[]) {
- return nullSafeHashCode((long[]) obj);
- }
- if (obj instanceof short[]) {
- return nullSafeHashCode((short[]) obj);
- }
- }
- return obj.hashCode();
- }
- /**
- * Return a hash code based on the contents of the specified array. If
- * <code>array</code> is <code>null</code>, this method returns 0.
- */
- public static int nullSafeHashCode(Object[] array) {
- if (array == null) {
- return 0;
- }
- int hash = INITIAL_HASH;
- int arraySize = array.length;
- for (int i = 0; i < arraySize; i++) {
- hash = MULTIPLIER * hash + nullSafeHashCode(array[i]);
- }
- return hash;
- }
- /**
- * Return a hash code based on the contents of the specified array. If
- * <code>array</code> is <code>null</code>, this method returns 0.
- */
- public static int nullSafeHashCode(boolean[] array) {
- if (array == null) {
- return 0;
- }
- int hash = INITIAL_HASH;
- int arraySize = array.length;
- for (int i = 0; i < arraySize; i++) {
- hash = MULTIPLIER * hash + hashCode(array[i]);
- }
- return hash;
- }
- /**
- * Return a hash code based on the contents of the specified array. If
- * <code>array</code> is <code>null</code>, this method returns 0.
- */
- public static int nullSafeHashCode(byte[] array) {
- if (array == null) {
- return 0;
- }
- int hash = INITIAL_HASH;
- int arraySize = array.length;
- for (int i = 0; i < arraySize; i++) {
- hash = MULTIPLIER * hash + array[i];
- }
- return hash;
- }
- /**
- * Return a hash code based on the contents of the specified array. If
- * <code>array</code> is <code>null</code>, this method returns 0.
- */
- public static int nullSafeHashCode(char[] array) {
- if (array == null) {
- return 0;
- }
- int hash = INITIAL_HASH;
- int arraySize = array.length;
- for (int i = 0; i < arraySize; i++) {
- hash = MULTIPLIER * hash + array[i];
- }
- return hash;
- }
- /**
- * Return a hash code based on the contents of the specified array. If
- * <code>array</code> is <code>null</code>, this method returns 0.
- */
- public static int nullSafeHashCode(double[] array) {
- if (array == null) {
- return 0;
- }
- int hash = INITIAL_HASH;
- int arraySize = array.length;
- for (int i = 0; i < arraySize; i++) {
- hash = MULTIPLIER * hash + hashCode(array[i]);
- }
- return hash;
- }
- /**
- * Return a hash code based on the contents of the specified array. If
- * <code>array</code> is <code>null</code>, this method returns 0.
- */
- public static int nullSafeHashCode(float[] array) {
- if (array == null) {
- return 0;
- }
- int hash = INITIAL_HASH;
- int arraySize = array.length;
- for (int i = 0; i < arraySize; i++) {
- hash = MULTIPLIER * hash + hashCode(array[i]);
- }
- return hash;
- }
- /**
- * Return a hash code based on the contents of the specified array. If
- * <code>array</code> is <code>null</code>, this method returns 0.
- */
- public static int nullSafeHashCode(int[] array) {
- if (array == null) {
- return 0;
- }
- int hash = INITIAL_HASH;
- int arraySize = array.length;
- for (int i = 0; i < arraySize; i++) {
- hash = MULTIPLIER * hash + array[i];
- }
- return hash;
- }
- /**
- * Return a hash code based on the contents of the specified array. If
- * <code>array</code> is <code>null</code>, this method returns 0.
- */
- public static int nullSafeHashCode(long[] array) {
- if (array == null) {
- return 0;
- }
- int hash = INITIAL_HASH;
- int arraySize = array.length;
- for (int i = 0; i < arraySize; i++) {
- hash = MULTIPLIER * hash + hashCode(array[i]);
- }
- return hash;
- }
- /**
- * Return a hash code based on the contents of the specified array. If
- * <code>array</code> is <code>null</code>, this method returns 0.
- */
- public static int nullSafeHashCode(short[] array) {
- if (array == null) {
- return 0;
- }
- int hash = INITIAL_HASH;
- int arraySize = array.length;
- for (int i = 0; i < arraySize; i++) {
- hash = MULTIPLIER * hash + array[i];
- }
- return hash;
- }
- /**
- * Return the same value as <code>{@link Boolean#hashCode()}</code>.
- *
- * @see Boolean#hashCode()
- */
- public static int hashCode(boolean bool) {
- return bool ? 1231 : 1237;
- }
- /**
- * Return the same value as <code>{@link Double#hashCode()}</code>.
- *
- * @see Double#hashCode()
- */
- public static int hashCode(double dbl) {
- long bits = Double.doubleToLongBits(dbl);
- return hashCode(bits);
- }
- /**
- * Return the same value as <code>{@link Float#hashCode()}</code>.
- *
- * @see Float#hashCode()
- */
- public static int hashCode(float flt) {
- return Float.floatToIntBits(flt);
- }
- /**
- * Return the same value as <code>{@link Long#hashCode()}</code>.
- *
- * @see Long#hashCode()
- */
- public static int hashCode(long lng) {
- return (int) (lng ^ (lng >>> 32));
- }
- // ---------------------------------------------------------------------
- // Convenience methods for toString output
- // ---------------------------------------------------------------------
- /**
- * Return a String representation of an object's overall identity.
- *
- * @param obj
- * the object (may be <code>null</code>)
- * @return the object's identity as String representation, or an empty
- * String if the object was <code>null</code>
- */
- public static String identityToString(Object obj) {
- if (obj == null) {
- return EMPTY_STRING;
- }
- return obj.getClass().getName() + "@" + getIdentityHexString(obj);
- }
- /**
- * Return a hex String form of an object's identity hash code.
- *
- * @param obj
- * the object
- * @return the object's identity code in hex notation
- */
- public static String getIdentityHexString(Object obj) {
- return Integer.toHexString(System.identityHashCode(obj));
- }
- /**
- * Return a content-based String representation if <code>obj</code> is not
- * <code>null</code>; otherwise returns an empty String.
- * <p>
- * Differs from {@link #nullSafeToString(Object)} in that it returns an
- * empty String rather than "null" for a <code>null</code> value.
- *
- * @param obj
- * the object to build a display String for
- * @return a display String representation of <code>obj</code>
- * @see #nullSafeToString(Object)
- */
- public static String getDisplayString(Object obj) {
- if (obj == null) {
- return EMPTY_STRING;
- }
- return nullSafeToString(obj);
- }
- /**
- * Determine the class name for the given object.
- * <p>
- * Returns <code>"null"</code> if <code>obj</code> is <code>null</code>.
- *
- * @param obj
- * the object to introspect (may be <code>null</code>)
- * @return the corresponding class name
- */
- public static String nullSafeClassName(Object obj) {
- return (obj != null ? obj.getClass().getName() : NULL_STRING);
- }
- /**
- * Return a String representation of the specified Object.
- * <p>
- * Builds a String representation of the contents in case of an array.
- * Returns <code>"null"</code> if <code>obj</code> is <code>null</code>.
- *
- * @param obj
- * the object to build a String representation for
- * @return a String representation of <code>obj</code>
- */
- public static String nullSafeToString(Object obj) {
- if (obj == null) {
- return NULL_STRING;
- }
- if (obj instanceof String) {
- return (String) obj;
- }
- if (obj instanceof Object[]) {
- return nullSafeToString((Object[]) obj);
- }
- if (obj instanceof boolean[]) {
- return nullSafeToString((boolean[]) obj);
- }
- if (obj instanceof byte[]) {
- return nullSafeToString((byte[]) obj);
- }
- if (obj instanceof char[]) {
- return nullSafeToString((char[]) obj);
- }
- if (obj instanceof double[]) {
- return nullSafeToString((double[]) obj);
- }
- if (obj instanceof float[]) {
- return nullSafeToString((float[]) obj);
- }
- if (obj instanceof int[]) {
- return nullSafeToString((int[]) obj);
- }
- if (obj instanceof long[]) {
- return nullSafeToString((long[]) obj);
- }
- if (obj instanceof short[]) {
- return nullSafeToString((short[]) obj);
- }
- String str = obj.toString();
- return (str != null ? str : EMPTY_STRING);
- }
- /**
- * Return a String representation of the contents of the specified array.
- * <p>
- * The String representation consists of a list of the array's elements,
- * enclosed in curly braces (<code>"{}"</code>). Adjacent elements are
- * separated by the characters <code>", "</code> (a comma followed by a
- * space). Returns <code>"null"</code> if <code>array</code> is
- * <code>null</code>.
- *
- * @param array
- * the array to build a String representation for
- * @return a String representation of <code>array</code>
- */
- public static String nullSafeToString(Object[] array) {
- if (array == null) {
- return NULL_STRING;
- }
- int length = array.length;
- if (length == 0) {
- return EMPTY_ARRAY;
- }
- StringBuilder sb = new StringBuilder();
- for (int i = 0; i < length; i++) {
- if (i == 0) {
- sb.append(ARRAY_START);
- } else {
- sb.append(ARRAY_ELEMENT_SEPARATOR);
- }
- sb.append(String.valueOf(array[i]));
- }
- sb.append(ARRAY_END);
- return sb.toString();
- }
- /**
- * Return a String representation of the contents of the specified array.
- * <p>
- * The String representation consists of a list of the array's elements,
- * enclosed in curly braces (<code>"{}"</code>). Adjacent elements are
- * separated by the characters <code>", "</code> (a comma followed by a
- * space). Returns <code>"null"</code> if <code>array</code> is
- * <code>null</code>.
- *
- * @param array
- * the array to build a String representation for
- * @return a String representation of <code>array</code>
- */
- public static String nullSafeToString(boolean[] array) {
- if (array == null) {
- return NULL_STRING;
- }
- int length = array.length;
- if (length == 0) {
- return EMPTY_ARRAY;
- }
- StringBuilder sb = new StringBuilder();
- for (int i = 0; i < length; i++) {
- if (i == 0) {
- sb.append(ARRAY_START);
- } else {
- sb.append(ARRAY_ELEMENT_SEPARATOR);
- }
- sb.append(array[i]);
- }
- sb.append(ARRAY_END);
- return sb.toString();
- }
- /**
- * Return a String representation of the contents of the specified array.
- * <p>
- * The String representation consists of a list of the array's elements,
- * enclosed in curly braces (<code>"{}"</code>). Adjacent elements are
- * separated by the characters <code>", "</code> (a comma followed by a
- * space). Returns <code>"null"</code> if <code>array</code> is
- * <code>null</code>.
- *
- * @param array
- * the array to build a String representation for
- * @return a String representation of <code>array</code>
- */
- public static String nullSafeToString(byte[] array) {
- if (array == null) {
- return NULL_STRING;
- }
- int length = array.length;
- if (length == 0) {
- return EMPTY_ARRAY;
- }
- StringBuilder sb = new StringBuilder();
- for (int i = 0; i < length; i++) {
- if (i == 0) {
- sb.append(ARRAY_START);
- } else {
- sb.append(ARRAY_ELEMENT_SEPARATOR);
- }
- sb.append(array[i]);
- }
- sb.append(ARRAY_END);
- return sb.toString();
- }
- /**
- * Return a String representation of the contents of the specified array.
- * <p>
- * The String representation consists of a list of the array's elements,
- * enclosed in curly braces (<code>"{}"</code>). Adjacent elements are
- * separated by the characters <code>", "</code> (a comma followed by a
- * space). Returns <code>"null"</code> if <code>array</code> is
- * <code>null</code>.
- *
- * @param array
- * the array to build a String representation for
- * @return a String representation of <code>array</code>
- */
- public static String nullSafeToString(char[] array) {
- if (array == null) {
- return NULL_STRING;
- }
- int length = array.length;
- if (length == 0) {
- return EMPTY_ARRAY;
- }
- StringBuilder sb = new StringBuilder();
- for (int i = 0; i < length; i++) {
- if (i == 0) {
- sb.append(ARRAY_START);
- } else {
- sb.append(ARRAY_ELEMENT_SEPARATOR);
- }
- sb.append("'").append(array[i]).append("'");
- }
- sb.append(ARRAY_END);
- return sb.toString();
- }
- /**
- * Return a String representation of the contents of the specified array.
- * <p>
- * The String representation consists of a list of the array's elements,
- * enclosed in curly braces (<code>"{}"</code>). Adjacent elements are
- * separated by the characters <code>", "</code> (a comma followed by a
- * space). Returns <code>"null"</code> if <code>array</code> is
- * <code>null</code>.
- *
- * @param array
- * the array to build a String representation for
- * @return a String representation of <code>array</code>
- */
- public static String nullSafeToString(double[] array) {
- if (array == null) {
- return NULL_STRING;
- }
- int length = array.length;
- if (length == 0) {
- return EMPTY_ARRAY;
- }
- StringBuilder sb = new StringBuilder();
- for (int i = 0; i < length; i++) {
- if (i == 0) {
- sb.append(ARRAY_START);
- } else {
- sb.append(ARRAY_ELEMENT_SEPARATOR);
- }
- sb.append(array[i]);
- }
- sb.append(ARRAY_END);
- return sb.toString();
- }
- /**
- * Return a String representation of the contents of the specified array.
- * <p>
- * The String representation consists of a list of the array's elements,
- * enclosed in curly braces (<code>"{}"</code>). Adjacent elements are
- * separated by the characters <code>", "</code> (a comma followed by a
- * space). Returns <code>"null"</code> if <code>array</code> is
- * <code>null</code>.
- *
- * @param array
- * the array to build a String representation for
- * @return a String representation of <code>array</code>
- */
- public static String nullSafeToString(float[] array) {
- if (array == null) {
- return NULL_STRING;
- }
- int length = array.length;
- if (length == 0) {
- return EMPTY_ARRAY;
- }
- StringBuilder sb = new StringBuilder();
- for (int i = 0; i < length; i++) {
- if (i == 0) {
- sb.append(ARRAY_START);
- } else {
- sb.append(ARRAY_ELEMENT_SEPARATOR);
- }
- sb.append(array[i]);
- }
- sb.append(ARRAY_END);
- return sb.toString();
- }
- /**
- * Return a String representation of the contents of the specified array.
- * <p>
- * The String representation consists of a list of the array's elements,
- * enclosed in curly braces (<code>"{}"</code>). Adjacent elements are
- * separated by the characters <code>", "</code> (a comma followed by a
- * space). Returns <code>"null"</code> if <code>array</code> is
- * <code>null</code>.
- *
- * @param array
- * the array to build a String representation for
- * @return a String representation of <code>array</code>
- */
- public static String nullSafeToString(int[] array) {
- if (array == null) {
- return NULL_STRING;
- }
- int length = array.length;
- if (length == 0) {
- return EMPTY_ARRAY;
- }
- StringBuilder sb = new StringBuilder();
- for (int i = 0; i < length; i++) {
- if (i == 0) {
- sb.append(ARRAY_START);
- } else {
- sb.append(ARRAY_ELEMENT_SEPARATOR);
- }
- sb.append(array[i]);
- }
- sb.append(ARRAY_END);
- return sb.toString();
- }
- /**
- * Return a String representation of the contents of the specified array.
- * <p>
- * The String representation consists of a list of the array's elements,
- * enclosed in curly braces (<code>"{}"</code>). Adjacent elements are
- * separated by the characters <code>", "</code> (a comma followed by a
- * space). Returns <code>"null"</code> if <code>array</code> is
- * <code>null</code>.
- *
- * @param array
- * the array to build a String representation for
- * @return a String representation of <code>array</code>
- */
- public static String nullSafeToString(long[] array) {
- if (array == null) {
- return NULL_STRING;
- }
- int length = array.length;
- if (length == 0) {
- return EMPTY_ARRAY;
- }
- StringBuilder sb = new StringBuilder();
- for (int i = 0; i < length; i++) {
- if (i == 0) {
- sb.append(ARRAY_START);
- } else {
- sb.append(ARRAY_ELEMENT_SEPARATOR);
- }
- sb.append(array[i]);
- }
- sb.append(ARRAY_END);
- return sb.toString();
- }
- /**
- * Return a String representation of the contents of the specified array.
- * <p>
- * The String representation consists of a list of the array's elements,
- * enclosed in curly braces (<code>"{}"</code>). Adjacent elements are
- * separated by the characters <code>", "</code> (a comma followed by a
- * space). Returns <code>"null"</code> if <code>array</code> is
- * <code>null</code>.
- *
- * @param array
- * the array to build a String representation for
- * @return a String representation of <code>array</code>
- */
- public static String nullSafeToString(short[] array) {
- if (array == null) {
- return NULL_STRING;
- }
- int length = array.length;
- if (length == 0) {
- return EMPTY_ARRAY;
- }
- StringBuilder sb = new StringBuilder();
- for (int i = 0; i < length; i++) {
- if (i == 0) {
- sb.append(ARRAY_START);
- } else {
- sb.append(ARRAY_ELEMENT_SEPARATOR);
- }
- sb.append(array[i]);
- }
- sb.append(ARRAY_END);
- return sb.toString();
- }
- public static boolean isValidCollection(Collection collection) {
- if (null != collection && 0 != collection.size()) {
- return true;
- } else {
- return false;
- }
- }
- public static boolean isEqualsSize(Collection res, Collection des) {
- if (res.size() == des.size()) {
- return true;
- } else {
- return false;
- }
- }
- public static boolean isNullString(String str) {
- if (null != str && !"".equals(str.trim())) {
- return false;
- }
- return true;
- }
- public static boolean isValidNumber(Integer number) {
- if (null != number && 0 < number) {
- return true;
- } else {
- return false;
- }
- }
- public static boolean isValidNumber(Double number) {
- if (null != number && 0 < number) {
- return true;
- } else {
- return false;
- }
- }
- public static boolean isValidNumber(Long number) {
- if (null != number && 0 < number) {
- return true;
- } else {
- return false;
- }
- }
- public static boolean isValidNumber(Short number) {
- if (null != number && 0 < number) {
- return true;
- } else {
- return false;
- }
- }
- public static boolean isValidNumber(String number) {
- if (null != number && !"".equals(number)) {
- Pattern pattern = Pattern.compile("[0-9]{1,}(\\.[0-9]{1,})?");
- Matcher m = pattern.matcher(number);
- return m.matches();
- } else {
- return false;
- }
- }
- public static boolean isValidStr(String str) {
- if (null != str && !"".equalsIgnoreCase(str) && !"null".equals(str)) {
- return true;
- } else {
- return false;
- }
- }
- }