1 /* 2 * Copyright (C) 2007 The Android Open Source Project 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 17 /** 18 * Interned strings 19 */ 20 public class Main { main(String args[])21 public static void main(String args[]) { 22 String a, b; 23 final String foo = "foo"; 24 final String bar = "bar"; 25 26 // Two interned strings should match. 27 a = foo.concat(bar).intern(); 28 b = foo.concat(bar).intern(); 29 if (a == b && foo != bar) { 30 System.out.println("good! " + a); 31 } else { 32 System.out.println("bad! " + a + " != " + b); 33 } 34 35 // An interned string should match a string literal. 36 a = ("f" + foo.substring(1,3)).intern(); 37 if (a == foo) { 38 System.out.println("good! " + a); 39 } else { 40 System.out.println("bad! " + a + " != " + b); 41 } 42 43 // Check that a string literal in libcore equals one in the app. 44 a = (new java.nio.charset.IllegalCharsetNameException(null)).getMessage(); 45 b = "null"; 46 if (a == b) { 47 System.out.println("good! " + a); 48 } else { 49 System.out.println("bad! " + a + " != " + b); 50 } 51 } 52 } 53