litesoft
@ 943
litesoft / trunk / DeviceDesktopTest / src / org / litesoft / commonfoundation / typeutils / Integers.java
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 |
package org.litesoft.commonfoundation.typeutils; public class Integers extends Numerics { public static final int[] EMPTY_ARRAY_PRIMITIVES = new int[0]; public static final Integer[] EMPTY_ARRAY = new Integer[0]; public static int deNull( Integer pValue ) { return (pValue != null) ? pValue : 0; } public static Integer assertNonNegative( String pName, Integer pValue ) throws IllegalArgumentException { if ( pValue != null ) { assertNonNegative( pName, pValue.intValue() ); } return pValue; } public static int assertNonNegative( String pName, int pValue ) throws IllegalArgumentException { if ( pValue < 0 ) { throw new IllegalArgumentException( pName + CANNOT_BE_NEGATIVE + ", but was: " + pValue ); } return pValue; } public static int assertPositive( String pWhat, int pValue ) { if ( 0 < pValue ) { return pValue; } throw new IllegalArgumentException( pWhat + MUST_BE_POSITIVE + ", but was: " + pValue ); } public static void assertNotEqual( String pObjectName, int pNotExpected, int pActual ) throws IllegalArgumentException { if ( pNotExpected == pActual ) { throw new IllegalArgumentException( pObjectName + ": '" + pNotExpected + "' Not allowed" ); } } public static void assertEqual( String pObjectName, int pExpected, int pActual ) throws IllegalArgumentException { if ( pExpected != pActual ) { throw new IllegalArgumentException( pObjectName + ": Expected '" + pExpected + "', but was '" + pActual + "'" ); } } public static String zeroPadIt( int pMinDesiredLength, int pIt ) { String rv = String.valueOf( pIt ); while ( rv.length() < pMinDesiredLength ) { rv = "0" + rv; } return rv; } public static String padIt( int pMinDesiredLength, int pIt ) { return Strings.padIt( pMinDesiredLength, "" + pIt ); } public static String iTpad( int pIt, int pMinDesiredLength ) { return Strings.iTpad( "" + pIt, pMinDesiredLength ); } public static boolean isNullOrEmpty( int[] pArrayToCheck ) { return (pArrayToCheck == null || pArrayToCheck.length == 0); } public static boolean areArraysEqual( int[] pThis, int[] pThat ) { if ( pThis == pThat ) // handles if both are null { return true; } if ( (pThis != null) && (pThat != null) && (pThis.length == pThat.length) ) { for ( int i = pThis.length; --i >= 0; ) { if ( pThis[i] != pThat[i] ) { return false; } } return true; } return false; } public static boolean checkIndex( int pIndex, int pMax, boolean pInclusive ) { return ((0 <= pIndex) && (pIndex < pMax)) || (pInclusive && (pIndex == pMax)); } public static void validateIndex( int pIndex, int pMax, boolean pInclusive ) throws IllegalArgumentException { if ( !checkIndex( pIndex, pMax, pInclusive ) ) { throw new IllegalArgumentException( "!( 0 <= " + pIndex + " " + (pInclusive ? "<=" : "<") + " " + pMax + " )" ); } } /** * return pIndex constained between 0 (inclusive) and pMax (pInclusive). If the effective 'max' is less than 0, then 0 will be returned. */ public static int constrainIndex( int pIndex, int pMax, boolean pInclusive ) { if ( (pMax <= pIndex) || (pInclusive && (pIndex == pMax)) ) { pIndex = pInclusive ? pMax : pMax - 1; } return (pIndex < 0) ? 0 : pIndex; } public static String getMax2PlacePercentage( int pPortions ) { if ( pPortions == 0 ) { return null; } int portion = 10000 / pPortions; String s = "" + portion; while ( s.length() < 3 ) { s = "0" + s; } int wholeLen = s.length() - 2; s = s.substring( 0, wholeLen ) + "." + s.substring( wholeLen ); while ( s.charAt( s.length() - 1 ) == '0' ) { s = s.substring( 0, s.length() - 1 ); } if ( s.charAt( s.length() - 1 ) == '.' ) { s = s.substring( 0, s.length() - 1 ); } return s + "%"; } public static boolean areNonArraysEqual( int pThis, int pThat ) { return (pThis == pThat); } /** * Returns a String that represents <i>pThis</i> with english code tail, * such as "3rd".<p> * <p/> * If <i>pThis</i> is non-negative, then append on the appropriate two * letter <i>english</i> code:<p> * <pre> * st,nd,rd,th * </pre><p> * * @param pThis the int to convert.<p> * * @return the String representation for <i>pThis</i> and if not negative, * then appended with the appropriate two letter <i>english</i> * junk.<p> */ public static String toNth( int pThis ) { String rv = Integer.toString( pThis ); if ( pThis < 0 ) { return rv; } if ( (pThis < 10) || ('1' != rv.charAt( rv.length() - 2 )) ) // not: 10-19 & 110-119, 210-219, ... 1010-1019, ... { switch ( rv.charAt( rv.length() - 1 ) ) { case '1': return rv + "st"; case '2': return rv + "nd"; case '3': return rv + "rd"; default: // 0th and n0th and 4th - 9th and n4th - n9th break; } } return rv + "th"; } public static int insureNonNegative( int pValue ) { return (pValue < 0) ? 0 : pValue; } public static int intValue( Integer pInteger, int pDefault ) { return (pInteger != null) ? pInteger : pDefault; } public static int intValue( long pValue ) { if ( (Integer.MIN_VALUE <= pValue) && (pValue <= Integer.MAX_VALUE) ) { return (int) pValue; } throw new IllegalArgumentException( "Value (" + pValue + ") is outside the acceptable Integer Range" ); } public static boolean isEven( int pInt ) { return ((pInt & 1) == 0); } public static boolean isOdd( int pInt ) { return ((pInt & 1) == 1); } } |