Examples of java.util.ArrayList.ensureCapacity()

java.util.ArrayList.ensureCapacity()
Increases the capacity of this ArrayList instance, if necessary, to ensure that it can hold at least the number of elements specified by the minimum capacity argument. @param minCapacity the desired minimum capacity

        int location = al.indexOf(testObject);
        al.ensureCapacity(capacity);
        assertTrue("EnsureCapacity moved objects around in array1.",
                location == al.indexOf(testObject));
        al.remove(0);
        al.ensureCapacity(capacity);
        assertTrue("EnsureCapacity moved objects around in array2.",
                --location == al.indexOf(testObject));
        al.ensureCapacity(capacity + 2);
        assertTrue("EnsureCapacity did not change location.", location == al
                .indexOf(testObject));

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                location == al.indexOf(testObject));
        al.remove(0);
        al.ensureCapacity(capacity);
        assertTrue("EnsureCapacity moved objects around in array2.",
                --location == al.indexOf(testObject));
        al.ensureCapacity(capacity + 2);
        assertTrue("EnsureCapacity did not change location.", location == al
                .indexOf(testObject));
    }


    /**

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      if (fciTargets instanceof ArrayList)
      {
         ArrayList fciArrayList = (ArrayList) fciTargets;
         try 
         { 
            fciArrayList.ensureCapacity(5);
            fail("ensureCapacity call did not fail");
         } 
         catch (UnsupportedOperationException good) {}
         
         try

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      if (fciTargets instanceof ArrayList)
      {
         ArrayList fciArrayList = (ArrayList) fciTargets;
         try 
         { 
            fciArrayList.ensureCapacity(5);
            fail("ensureCapacity call did not fail");
         } 
         catch (UnsupportedOperationException good) {}
         
         try

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  }


  @Override
  public Object resize(final Object list, final int newSize) {
    final ArrayList l = (ArrayList) list;
    l.ensureCapacity(newSize);
    while (l.size() < newSize) {
      l.add(null);
    }
    while (l.size() > newSize) {
      l.remove(l.size() - 1);

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                           SOAPUnmarshaller unmsh) throws SOAPUnmarshallerException
      {
         ArrayList list = getList(nObj, m_nOrdinal, ((XMLUnmarshaller)unmsh));


         // add empty positions
         for(list.ensureCapacity(nCookie + 1); list.size() <= nCookie; list.add(null));


         list.set(nCookie, value);
      }


      /**

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        Connection conn = DriverManager.getConnection("jdbc:derby:wombat;create=true");
        conn.close();
        conn = null;
        
        ArrayList list = new ArrayList();
        list.ensureCapacity(30000);
        
        Properties p = new Properties();
        
        while (true) {
            Connection c;

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        System.out.println("");
        
        System.out.println(list.size() + " successful connections");
        
        list.ensureCapacity(list.size() + 500);
        
        // try to make 500 more connection requests.
        int fail_sqloome = 0;
        int fail_sql = 0;
        int fail_bad = 0;

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        for (i = 0; i < capacity / 2; i++) {
            al.add(i, new Object());
        }
        al.add(i, testObject);
        int location = al.indexOf(testObject);
        al.ensureCapacity(capacity);
        assertTrue("EnsureCapacity moved objects around in array1.",
                location == al.indexOf(testObject));
        al.remove(0);
        al.ensureCapacity(capacity);
        assertTrue("EnsureCapacity moved objects around in array2.",

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        int location = al.indexOf(testObject);
        al.ensureCapacity(capacity);
        assertTrue("EnsureCapacity moved objects around in array1.",
                location == al.indexOf(testObject));
        al.remove(0);
        al.ensureCapacity(capacity);
        assertTrue("EnsureCapacity moved objects around in array2.",
                --location == al.indexOf(testObject));
        al.ensureCapacity(capacity + 2);
        assertTrue("EnsureCapacity did not change location.", location == al
                .indexOf(testObject));

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