Examples of java.util.Random.nextBoolean()

java.util.Random.nextBoolean()
Returns the next pseudorandom, uniformly distributed {@code boolean} value from this random number generator'ssequence. The general contract of {@code nextBoolean} is that one{@code boolean} value is pseudorandomly generated and returned. Thevalues {@code true} and {@code false} are produced with(approximately) equal probability.
The method {@code nextBoolean} is implemented by class {@code Random}as if by:
```
  {@code}public boolean nextBoolean()  return next(1) != 0; }}
```
@return the next pseudorandom, uniformly distributed{@code boolean} value from this random number generator'ssequence @since 1.2

          Tokenizer tokenizer = new KeywordTokenizer(reader);
          return new TokenStreamComponents(tokenizer, new SynonymFilter(tokenizer, map, ignoreCase));
        }
      };


      checkAnalysisConsistency(random, analyzer, random.nextBoolean(), "");
    }
  }
  
  /** simple random test like testRandom2, but for larger docs
   */

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   */
  public void testRandomHuge() throws Exception {
    Random random = random();
    final int numIters = atLeast(3);
    for (int i = 0; i < numIters; i++) {
      b = new SynonymMap.Builder(random.nextBoolean());
      final int numEntries = atLeast(10);
      if (VERBOSE) {
        System.out.println("TEST: iter=" + i + " numEntries=" + numEntries);
      }
      for (int j = 0; j < numEntries; j++) {

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      final int numEntries = atLeast(10);
      if (VERBOSE) {
        System.out.println("TEST: iter=" + i + " numEntries=" + numEntries);
      }
      for (int j = 0; j < numEntries; j++) {
        add(randomNonEmptyString(), randomNonEmptyString(), random.nextBoolean());
      }
      final SynonymMap map = b.build();
      final boolean ignoreCase = random.nextBoolean();
      
      final Analyzer analyzer = new Analyzer() {

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      }
      for (int j = 0; j < numEntries; j++) {
        add(randomNonEmptyString(), randomNonEmptyString(), random.nextBoolean());
      }
      final SynonymMap map = b.build();
      final boolean ignoreCase = random.nextBoolean();
      
      final Analyzer analyzer = new Analyzer() {
        @Override
        protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
          Tokenizer tokenizer = new MockTokenizer(reader, MockTokenizer.SIMPLE, true);

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    RollingCharBuffer buffer = new RollingCharBuffer();


    Random random = random();
    for(int iter=0;iter<ITERS;iter++) {
      final int stringLen = random.nextBoolean() ? random.nextInt(50) : random.nextInt(20000);
      final String s;
      if (stringLen == 0) {
        s = "";
      } else {
        s = _TestUtil.randomUnicodeString(random, stringLen);

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      int availCount = 0;
      while(nextRead < s.length()) {
        if (VERBOSE) {
          System.out.println("  cycle nextRead=" + nextRead + " avail=" + availCount);
        }
        if (availCount == 0 || random.nextBoolean()) {
          // Read next char
          if (VERBOSE) {
            System.out.println("    new char");
          }
          assertEquals(s.charAt(nextRead), buffer.get(nextRead));

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            System.out.println("    new char");
          }
          assertEquals(s.charAt(nextRead), buffer.get(nextRead));
          nextRead++;
          availCount++;
        } else if (random.nextBoolean()) {
          // Read previous char
          int pos = _TestUtil.nextInt(random, nextRead-availCount, nextRead-1);
          if (VERBOSE) {
            System.out.println("    old char pos=" + pos);
          }

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        Tokenizer tokenizer = new KeywordTokenizer(reader);
        return new TokenStreamComponents(tokenizer, 
            new EdgeNGramTokenFilter(TEST_VERSION_CURRENT, tokenizer, EdgeNGramTokenFilter.Side.FRONT, 2, 15));
      }    
    };
    checkAnalysisConsistency(random, a, random.nextBoolean(), "");
    
    Analyzer b = new Analyzer() {
      @Override
      protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
        Tokenizer tokenizer = new KeywordTokenizer(reader);

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        Tokenizer tokenizer = new KeywordTokenizer(reader);
        return new TokenStreamComponents(tokenizer, 
            new EdgeNGramTokenFilter(Version.LUCENE_43, tokenizer, EdgeNGramTokenFilter.Side.BACK, 2, 15));
      }    
    };
    checkAnalysisConsistency(random, b, random.nextBoolean(), "");
  }


  public void testGraphs() throws IOException {
    TokenStream tk = new LetterTokenizer(TEST_VERSION_CURRENT, new StringReader("abc d efgh ij klmno p q"));
    tk = new ShingleFilter(tk);

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    // delete some docs
    int numDeletes = numDocs/20;
    for (int i = 0; i < numDeletes; i++) {
      Term toDelete = new Term("id", Integer.toString(random.nextInt(numDocs)));
      if (random.nextBoolean()) {
        iw.deleteDocuments(toDelete);
      } else {
        iw.deleteDocuments(new TermQuery(toDelete));
      }
    }

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