[Demonstration 1]

[Buggy Method]
@Override
public void replace(Integer name, String folder) {
    list.remove(name);
    super.replace(name, folder);
}

[Buggy Hunk]
public void replace(Integer name, String folder) {

[Patch]
public void replace(Integer name, String folder) throws IOException {

[Demonstration 2]

[Buggy Method]
@Override
public V get() {
    ensureInitialized();
    final V value = this.value.get().get();
    return value;
}

[Buggy Hunk]
final V value = this.value.get().get();

[Patch]
final V value = this.value.get();

[Demonstration 3]

[Buggy Method]
public static String makeList(ArrayList<String> vars) {
    StringBuffer l = new StringBuffer("[ ");
    if (vars.size() > 0) {
        l.append(vars.get(0));
        for (int i = 1; i < vars.size(); i++) {
            l.append(", ");
            l.append(vars.get(i));
        }
    }
    l.append(" ]");
    return l.toString();
}

[Buggy Hunk]
if(vars.size()>0){

[Patch]
if((vars!=null) && (vars.size()>0)){