1/* 2 * Copyright (C) 2009 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package benchmarks.regression; 18 19import java.util.Formatter; 20import java.util.Locale; 21 22/** 23 * Compares Formatter against hand-written StringBuilder code. 24 */ 25public class FormatterBenchmark { 26 public void timeFormatter_NoFormatting(int reps) { 27 for (int i = 0; i < reps; i++) { 28 Formatter f = new Formatter(); 29 f.format("this is a reasonably short string that doesn't actually need any formatting"); 30 } 31 } 32 33 public void timeStringBuilder_NoFormatting(int reps) { 34 for (int i = 0; i < reps; i++) { 35 StringBuilder sb = new StringBuilder(); 36 sb.append("this is a reasonably short string that doesn't actually need any formatting"); 37 } 38 } 39 40 public void timeFormatter_OneInt(int reps) { 41 Integer value = Integer.valueOf(1024); // We're not trying to benchmark boxing here. 42 for (int i = 0; i < reps; i++) { 43 Formatter f = new Formatter(); 44 f.format("this is a reasonably short string that has an int %d in it", value); 45 } 46 } 47 48 public void timeFormatter_OneIntArabic(int reps) { 49 Locale arabic = new Locale("ar"); 50 Integer value = Integer.valueOf(1024); // We're not trying to benchmark boxing here. 51 for (int i = 0; i < reps; i++) { 52 Formatter f = new Formatter(); 53 f.format(arabic, "this is a reasonably short string that has an int %d in it", value); 54 } 55 } 56 57 public void timeStringBuilder_OneInt(int reps) { 58 for (int i = 0; i < reps; i++) { 59 StringBuilder sb = new StringBuilder(); 60 sb.append("this is a reasonably short string that has an int "); 61 sb.append(1024); 62 sb.append(" in it"); 63 } 64 } 65 66 public void timeFormatter_OneHexInt(int reps) { 67 Integer value = Integer.valueOf(1024); // We're not trying to benchmark boxing here. 68 for (int i = 0; i < reps; i++) { 69 Formatter f = new Formatter(); 70 f.format("this is a reasonably short string that has an int %x in it", value); 71 } 72 } 73 74 public void timeStringBuilder_OneHexInt(int reps) { 75 for (int i = 0; i < reps; i++) { 76 StringBuilder sb = new StringBuilder(); 77 sb.append("this is a reasonably short string that has an int "); 78 sb.append(Integer.toHexString(1024)); 79 sb.append(" in it"); 80 } 81 } 82 83 public void timeFormatter_OneFloat(int reps) { 84 Float value = Float.valueOf(10.24f); // We're not trying to benchmark boxing here. 85 for (int i = 0; i < reps; i++) { 86 Formatter f = new Formatter(); 87 f.format("this is a reasonably short string that has a float %f in it", value); 88 } 89 } 90 91 public void timeFormatter_OneFloat_dot2f(int reps) { 92 Float value = Float.valueOf(10.24f); // We're not trying to benchmark boxing here. 93 for (int i = 0; i < reps; i++) { 94 Formatter f = new Formatter(); 95 f.format("this is a reasonably short string that has a float %.2f in it", value); 96 } 97 } 98 99 public void timeFormatter_TwoFloats(int reps) { 100 Float value = Float.valueOf(10.24f); // We're not trying to benchmark boxing here. 101 for (int i = 0; i < reps; i++) { 102 Formatter f = new Formatter(); 103 f.format("this is a reasonably short string that has two floats %f and %f in it", value, value); 104 } 105 } 106 107 public void timeStringBuilder_OneFloat(int reps) { 108 for (int i = 0; i < reps; i++) { 109 StringBuilder sb = new StringBuilder(); 110 sb.append("this is a reasonably short string that has a float "); 111 sb.append(10.24f); 112 sb.append(" in it"); 113 } 114 } 115 116 public void timeFormatter_OneString(int reps) { 117 for (int i = 0; i < reps; i++) { 118 Formatter f = new Formatter(); 119 f.format("this is a reasonably short string that has a string %s in it", "hello"); 120 } 121 } 122 123 public void timeStringBuilder_OneString(int reps) { 124 for (int i = 0; i < reps; i++) { 125 StringBuilder sb = new StringBuilder(); 126 sb.append("this is a reasonably short string that has a string "); 127 sb.append("hello"); 128 sb.append(" in it"); 129 } 130 } 131} 132