vm/src/test/java/org/apidesign/vm4brwsr/StringSample.java
author Jaroslav Tulach <jtulach@netbeans.org>
Wed, 21 Nov 2012 21:48:51 +0100
changeset 192 3bb0eb51bed6
parent 188 51d08c49e9b6
child 193 c705a447ce71
permissions -rw-r--r--
StringBuilder.delete needs bottom-up array copy
     1 /**
     2  * Back 2 Browser Bytecode Translator
     3  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
     4  *
     5  * This program is free software: you can redistribute it and/or modify
     6  * it under the terms of the GNU General Public License as published by
     7  * the Free Software Foundation, version 2 of the License.
     8  *
     9  * This program is distributed in the hope that it will be useful,
    10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    12  * GNU General Public License for more details.
    13  *
    14  * You should have received a copy of the GNU General Public License
    15  * along with this program. Look for COPYING file in the top folder.
    16  * If not, see http://opensource.org/licenses/GPL-2.0.
    17  */
    18 package org.apidesign.vm4brwsr;
    19 
    20 /**
    21  *
    22  * @author Jaroslav Tulach <jtulach@netbeans.org>
    23  */
    24 public class StringSample {
    25     public static final String HELLO = "Hello World!";
    26     private static int counter;
    27     
    28     private final int cnt;
    29     public StringSample() {
    30         cnt = ++counter;
    31     }
    32     
    33     
    34     public static char sayHello(int indx) {
    35         return HELLO.charAt(indx);
    36     }
    37     
    38     public static boolean equalToHello(int from, int to) {
    39         return "Hello".equals(HELLO.substring(from, to));
    40     }
    41     
    42     public static String fromChars(char a, char b, char c) {
    43         char[] arr = { a, b, c };
    44         return new String(arr).toString();
    45     }
    46     
    47     public static String charsFromNumbers() {
    48         return chars((char)65, (char)66, (char)67);
    49     }
    50 
    51     public static String charsFromChars() {
    52         return chars('A', 'B', 'C');
    53     }
    54 
    55     public static String chars(char a, char b, char c) {
    56         return ("" + a + b +c).toString();
    57     }
    58     
    59     public static String replace(String s, char a, char b) {
    60         return s.replace(a, b);
    61     }
    62     
    63     public static String insertBuffer() {
    64         StringBuilder sb = new StringBuilder();
    65         sb.append("Jardo!");
    66         sb.insert(0, "Ahoj ");
    67         sb.delete(4, 8);
    68         return sb.toString().toString();
    69     }
    70     
    71     public static int countAB(String txt) {
    72         int cnt = 0;
    73         for (int i = 0; i < txt.length(); i++) {
    74             switch (txt.charAt(i)) {
    75                 case 'A': cnt++; break;
    76                 case 'B': cnt += 2; break;
    77             }
    78         }
    79         return cnt;
    80     }
    81     
    82     public static String toStringTest(int howMuch) {
    83         counter = 0;
    84         StringSample ss = null;
    85         for (int i = 0; i < howMuch; i++) {
    86             ss = new StringSample();
    87         }
    88         return ss.toString().toString();
    89     }
    90     
    91     public static String concatStrings() {
    92         return (toStringTest(1) + "\\\n\r\t").toString();
    93     }
    94 
    95     @Override
    96     public String toString() {
    97         return HELLO + cnt;
    98     }
    99 }