Examples of java.util.ArrayList.indexOf()

java.util.ArrayList.indexOf()
Returns the index of the first occurrence of the specified element in this list, or -1 if this list does not contain the element. More formally, returns the lowest index i such that (o==null ? get(i)==null : o.equals(get(i))), or -1 if there is no such index.

    // Remove duplicates
    List duplicateFreeList = new ArrayList();
    Iterator iterator = list.iterator();
    while(iterator.hasNext()) {
      Object next = iterator.next();
      if(duplicateFreeList.indexOf(next) == -1) {
        duplicateFreeList.add(next);
      }
    }
    
    return (String[]) duplicateFreeList.toArray(new String[duplicateFreeList.size()]);

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    // Remove duplicates
    List duplicateFreeList = new ArrayList();
    Iterator iterator = list.iterator();
    while(iterator.hasNext()) {
      Object next = iterator.next();
      if(duplicateFreeList.indexOf(next) == -1) {
        duplicateFreeList.add(next);
      }
    }
    
    return (String[]) duplicateFreeList.toArray(new String[duplicateFreeList.size()]);

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            getResolveOptions(new String[] {"default"}));


        List revisions = new ArrayList(report.getConfigurationReport("default").getModuleRevisionIds());
        assertTrue("number of revisions is not correct", revisions.size() >= 3);


        int mod12Index = revisions.indexOf(ModuleRevisionId.newInstance("org1", "mod1.2", "1.1"));
        int mod32Index = revisions.indexOf(ModuleRevisionId.newInstance("org3", "mod3.2", "1.4"));
        int mod51Index = revisions.indexOf(ModuleRevisionId.newInstance("org5", "mod5.1", "4.2"));


        // verify the order of the modules in the ivy file
        assertTrue("[ org1 | mod1.2 | 1.1 ] was not found", mod12Index > -1);

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        List revisions = new ArrayList(report.getConfigurationReport("default").getModuleRevisionIds());
        assertTrue("number of revisions is not correct", revisions.size() >= 3);


        int mod12Index = revisions.indexOf(ModuleRevisionId.newInstance("org1", "mod1.2", "1.1"));
        int mod32Index = revisions.indexOf(ModuleRevisionId.newInstance("org3", "mod3.2", "1.4"));
        int mod51Index = revisions.indexOf(ModuleRevisionId.newInstance("org5", "mod5.1", "4.2"));


        // verify the order of the modules in the ivy file
        assertTrue("[ org1 | mod1.2 | 1.1 ] was not found", mod12Index > -1);
        assertTrue("[ org1 | mod1.2 | 1.1 ] must come before [ org3 | mod3.2 | 1.4 ]", mod12Index < mod32Index);

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        List revisions = new ArrayList(report.getConfigurationReport("default").getModuleRevisionIds());
        assertTrue("number of revisions is not correct", revisions.size() >= 3);


        int mod12Index = revisions.indexOf(ModuleRevisionId.newInstance("org1", "mod1.2", "1.1"));
        int mod32Index = revisions.indexOf(ModuleRevisionId.newInstance("org3", "mod3.2", "1.4"));
        int mod51Index = revisions.indexOf(ModuleRevisionId.newInstance("org5", "mod5.1", "4.2"));


        // verify the order of the modules in the ivy file
        assertTrue("[ org1 | mod1.2 | 1.1 ] was not found", mod12Index > -1);
        assertTrue("[ org1 | mod1.2 | 1.1 ] must come before [ org3 | mod3.2 | 1.4 ]", mod12Index < mod32Index);
        assertTrue("[ org3 | mod3.2 | 1.4 ] must come before [ org5 | mod5.1 | 4.2 ]", mod32Index < mod51Index);

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        }
    }


    public static void assertBefore(Object before, Object after, LinkedHashSet set) {
        List list = new ArrayList(set);
        int beforeIndex = list.indexOf(before);
        assertTrue("Expected " + before + " to be contained in the list " + list,
                beforeIndex >= 0);


        int afterIndex = list.indexOf(after);
        assertTrue("Expected " + after + " to be contained in the list " + list,

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        List list = new ArrayList(set);
        int beforeIndex = list.indexOf(before);
        assertTrue("Expected " + before + " to be contained in the list " + list,
                beforeIndex >= 0);


        int afterIndex = list.indexOf(after);
        assertTrue("Expected " + after + " to be contained in the list " + list,
                afterIndex >= 0);


        assertTrue("Expected " + before + " to be before " + after + " in the list " + list,
                beforeIndex < afterIndex);

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                for (Iterator iterator = extraAttributes.keySet().iterator(); iterator.hasNext();) {
                    String attName = (String)iterator.next();
                    details.append(" extra-").append(attName).append("=\"").append(extraAttributes.get(attName)).append("\"");
                }
        String defaultValue = dep.getDescriptor() != null ? " default=\""+dep.getDescriptor().isDefault()+"\"" : "";
                int position = dependencies.indexOf(dep.getResolvedId());
                out.println("\t\t\t<revision name=\""+dep.getResolvedId().getRevision()+"\"" +
                     (dep.getResolvedId().getBranch() == null?"":" branch=\""+dep.getResolvedId().getBranch()+"\"")+
             details +
                         " downloaded=\""+dep.isDownloaded()+"\""+
                         " searched=\""+dep.isSearched()+"\""+

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        for (int i = FIRST_CHOICE; i < state.length; i += 2) {            
            ids.add(state[i]);
            listBox.addItem(state[i + 1]);
        }
        listBox.setSelectedIndex(ids.indexOf(state[ANSWER]));
        listBox.addChangeListener(new ChangeListener() {
            public void onChange(Widget sender) {
                reactToChange((String) ids.get(listBox.getSelectedIndex()));
            }
        });

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        int i;
        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);

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