1 import otherpackage.OtherPackagePublicEnum; 2 3 public class Main { 4 /** used by {@link #basisCall} */ 5 static private int basisTestValue = 12; 6 7 static public void main(String[] args) throws Exception { 8 boolean timing = (args.length >= 1) && args[0].equals("--timing"); 9 run(timing); 10 } 11 12 static public void run(boolean timing) { 13 preTest(); 14 15 long time0 = System.nanoTime(); 16 int count1 = test1(500); 17 long time1 = System.nanoTime(); 18 int count2 = test2(500); 19 long time2 = System.nanoTime(); 20 int count3 = test3(500); 21 long time3 = System.nanoTime(); 22 int count4 = basis(500); 23 long time4 = System.nanoTime(); 24 25 System.out.println("basis: performed " + count4 + " iterations"); 26 System.out.println("test1: performed " + count1 + " iterations"); 27 System.out.println("test2: performed " + count2 + " iterations"); 28 System.out.println("test3: performed " + count3 + " iterations"); 29 30 double msec1 = (time1 - time0) / (double) count1 / 1000000; 31 double msec2 = (time2 - time1) / (double) count2 / 1000000; 32 double msec3 = (time3 - time2) / (double) count3 / 1000000; 33 double basisMsec = (time4 - time3) / (double) count4 / 1000000; 34 35 double avg = (msec1 + msec2 + msec3) / 3; 36 if (avg < (basisMsec * 10)) { 37 System.out.println("Timing is acceptable."); 38 } else { 39 System.out.println("Iterations are taking too long!"); 40 timing = true; 41 } 42 43 if (timing) { 44 System.out.printf("basis time: %.3g msec\n", basisMsec); 45 System.out.printf("test1: %.3g msec per iteration\n", msec1); 46 System.out.printf("test2: %.3g msec per iteration\n", msec2); 47 System.out.printf("test3: %.3g msec per iteration\n", msec3); 48 } 49 50 } 51 52 static public void preTest() { 53 /* 54 * This is meant to ensure that the basic enum functionality 55 * really is working. 56 */ 57 58 Class<SamePackagePublicEnum> c = SamePackagePublicEnum.class; 59 60 System.out.println(Enum.valueOf(c, "FOUR")); 61 System.out.println(Enum.valueOf(c, "ONE")); 62 System.out.println(Enum.valueOf(c, "FOURTEEN")); 63 System.out.println(Enum.valueOf(c, "NINE")); 64 System.out.println(Enum.valueOf(c, "FIVE")); 65 System.out.println(Enum.valueOf(c, "TWELVE")); 66 67 System.out.println(Enum.valueOf(c, "ZERO").getClass().getName()); 68 } 69 70 static final String[] BASIS_COMPARE_ARRAY = { 71 "ZERO", "ONE", "TWO", "THREE", "FOUR", "FIVE", "SIX", "SEVEN", "EIGHT", 72 "NINE", "TEN", "ELEVEN", "TWELVE", "THIRTEEN", "FOURTEEN", "FIFTEEN", 73 "SIXTEEN", "SEVENTEEN", "EIGHTEEN", "NINETEEN" 74 }; 75 76 static public int basis(int iters) { 77 for (int i = iters; i > 0; i--) { 78 basisValueOf("ZERO"); 79 basisValueOf("ONE"); 80 basisValueOf("TWO"); 81 basisValueOf("THREE"); 82 basisValueOf("FOUR"); 83 basisValueOf("FIVE"); 84 basisValueOf("SIX"); 85 basisValueOf("SEVEN"); 86 basisValueOf("EIGHT"); 87 basisValueOf("NINE"); 88 basisValueOf("TEN"); 89 basisValueOf("ELEVEN"); 90 basisValueOf("TWELVE"); 91 basisValueOf("THIRTEEN"); 92 basisValueOf("FOURTEEN"); 93 basisValueOf("FIFTEEN"); 94 basisValueOf("SIXTEEN"); 95 basisValueOf("SEVENTEEN"); 96 basisValueOf("EIGHTEEN"); 97 basisValueOf("NINETEEN"); 98 } 99 100 return iters * 20; 101 } 102 103 static String basisValueOf(String key) { 104 for (String s : BASIS_COMPARE_ARRAY) { 105 if (s.equals(key)) { 106 return s; 107 } 108 } 109 throw new IllegalArgumentException(); 110 } 111 112 static public int test1(int iters) { 113 Class<SamePackagePublicEnum> c = SamePackagePublicEnum.class; 114 for (int i = iters; i > 0; i--) { 115 Enum.valueOf(c, "ZERO"); 116 Enum.valueOf(c, "ONE"); 117 Enum.valueOf(c, "TWO"); 118 Enum.valueOf(c, "THREE"); 119 Enum.valueOf(c, "FOUR"); 120 Enum.valueOf(c, "FIVE"); 121 Enum.valueOf(c, "SIX"); 122 Enum.valueOf(c, "SEVEN"); 123 Enum.valueOf(c, "EIGHT"); 124 Enum.valueOf(c, "NINE"); 125 Enum.valueOf(c, "TEN"); 126 Enum.valueOf(c, "ELEVEN"); 127 Enum.valueOf(c, "TWELVE"); 128 Enum.valueOf(c, "THIRTEEN"); 129 Enum.valueOf(c, "FOURTEEN"); 130 Enum.valueOf(c, "FIFTEEN"); 131 Enum.valueOf(c, "SIXTEEN"); 132 Enum.valueOf(c, "SEVENTEEN"); 133 Enum.valueOf(c, "EIGHTEEN"); 134 Enum.valueOf(c, "NINETEEN"); 135 } 136 137 return iters * 20; 138 } 139 140 static public int test2(int iters) { 141 Class<SamePackagePrivateEnum> c = SamePackagePrivateEnum.class; 142 for (int i = iters; i > 0; i--) { 143 Enum.valueOf(c, "ZERO"); 144 Enum.valueOf(c, "ONE"); 145 Enum.valueOf(c, "TWO"); 146 Enum.valueOf(c, "THREE"); 147 Enum.valueOf(c, "FOUR"); 148 Enum.valueOf(c, "FIVE"); 149 Enum.valueOf(c, "SIX"); 150 Enum.valueOf(c, "SEVEN"); 151 Enum.valueOf(c, "EIGHT"); 152 Enum.valueOf(c, "NINE"); 153 Enum.valueOf(c, "TEN"); 154 Enum.valueOf(c, "ELEVEN"); 155 Enum.valueOf(c, "TWELVE"); 156 Enum.valueOf(c, "THIRTEEN"); 157 Enum.valueOf(c, "FOURTEEN"); 158 Enum.valueOf(c, "FIFTEEN"); 159 Enum.valueOf(c, "SIXTEEN"); 160 Enum.valueOf(c, "SEVENTEEN"); 161 Enum.valueOf(c, "EIGHTEEN"); 162 Enum.valueOf(c, "NINETEEN"); 163 } 164 165 return iters * 20; 166 } 167 168 static public int test3(int iters) { 169 Class<OtherPackagePublicEnum> c = OtherPackagePublicEnum.class; 170 for (int i = iters; i > 0; i--) { 171 Enum.valueOf(c, "ZERO"); 172 Enum.valueOf(c, "ONE"); 173 Enum.valueOf(c, "TWO"); 174 Enum.valueOf(c, "THREE"); 175 Enum.valueOf(c, "FOUR"); 176 Enum.valueOf(c, "FIVE"); 177 Enum.valueOf(c, "SIX"); 178 Enum.valueOf(c, "SEVEN"); 179 Enum.valueOf(c, "EIGHT"); 180 Enum.valueOf(c, "NINE"); 181 Enum.valueOf(c, "TEN"); 182 Enum.valueOf(c, "ELEVEN"); 183 Enum.valueOf(c, "TWELVE"); 184 Enum.valueOf(c, "THIRTEEN"); 185 Enum.valueOf(c, "FOURTEEN"); 186 Enum.valueOf(c, "FIFTEEN"); 187 Enum.valueOf(c, "SIXTEEN"); 188 Enum.valueOf(c, "SEVENTEEN"); 189 Enum.valueOf(c, "EIGHTEEN"); 190 Enum.valueOf(c, "NINETEEN"); 191 } 192 193 return iters * 20; 194 } 195 } 196
