本文整理了Java中java.util.ArrayList.size()方法的一些代码示例，展示了ArrayList.size()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。ArrayList.size()方法的具体详情如下：
包路径：java.util.ArrayList
类名称：ArrayList
方法名：size

ArrayList.size介绍

[英]The number of elements in this list.
[中]此列表中的元素数。

代码示例

canonical example by Tabnine

private void usingArrayList() {
 ArrayList<String> list = new ArrayList<>(Arrays.asList("cat", "cow", "dog"));
 list.add("fish");
 int size = list.size(); // size = 4
 list.set(size - 1, "horse"); // replacing the last element to "horse"
 String removed = list.remove(1); // removed = "cow"
 String second = list.get(1); // second = "dog"
}

代码示例来源：origin: apache/incubator-dubbo

/**
 * Adds a list/map reference.
 */
@Override
public int addRef(Object ref) {
  if (_refs == null)
    _refs = new ArrayList();
  _refs.add(ref);
  return _refs.size() - 1;
}

代码示例来源：origin: ReactiveX/RxJava

@Override
public void add(int index, T element) {
  list.add(index, element);
  lazySet(list.size());
}

代码示例来源：origin: stackoverflow.com

// Substitute appropriate type.
ArrayList<...> a = new ArrayList<...>();

// Add elements to list.

// Generate an iterator. Start just after the last element.
ListIterator li = a.listIterator(a.size());

// Iterate in reverse.
while(li.hasPrevious()) {
 System.out.println(li.previous());
}

代码示例来源：origin: stackoverflow.com

public class SortedList<E> extends AbstractList<E> {

  private ArrayList<E> internalList = new ArrayList<E>();

  // Note that add(E e) in AbstractList is calling this one
  @Override 
  public void add(int position, E e) {
    internalList.add(e);
    Collections.sort(internalList, null);
  }

  @Override
  public E get(int i) {
    return internalList.get(i);
  }

  @Override
  public int size() {
    return internalList.size();
  }

}

代码示例来源：origin: google/ExoPlayer

private List<Cue> getDisplayCues() {
 List<Cue> displayCues = new ArrayList<>();
 for (int i = 0; i < cueBuilders.size(); i++) {
  Cue cue = cueBuilders.get(i).build();
  if (cue != null) {
   displayCues.add(cue);
  }
 }
 return displayCues;
}

代码示例来源：origin: google/guava

@CollectionSize.Require(absent = CollectionSize.ZERO)
public void testEquals_otherListWithDifferentElements() {
 ArrayList<E> other = new ArrayList<>(getSampleElements());
 other.set(other.size() / 2, getSubjectGenerator().samples().e3());
 assertFalse(
   "A List should not equal another List containing different elements.",
   getList().equals(other));
}

代码示例来源：origin: scouter-project/scouter

public void printCRUD() {
  do {
    System.out.print("type:" + sqlNode.type.toString() + "-->");
    for (int i = 0; i < sqlNode.tableList.size(); i++) {
      System.out.print(sqlNode.tableList.get(i) + " ");
    }
    System.out.println();
    sqlNode = sqlNode.nextNode;
  } while (sqlNode != null);
}

代码示例来源：origin: stanfordnlp/CoreNLP

protected ArrayList<Integer> scanForPronouns(ArrayList<Pair<Integer, Integer>> nonQuoteRuns) {
 ArrayList<Integer> pronounList = new ArrayList<>();
 for(int run_index = 0; run_index < nonQuoteRuns.size(); run_index++)
  pronounList.addAll(scanForPronouns(nonQuoteRuns.get(run_index)));
 return pronounList;
}

代码示例来源：origin: apache/flink

/**
 * Increases the result vector component at the specified position by the specified delta.
 */
private void updateResultVector(int position, int delta) {
  // inflate the vector to contain the given position
  while (this.resultVector.size() <= position) {
    this.resultVector.add(0);
  }
  // increment the component value
  final int component = this.resultVector.get(position);
  this.resultVector.set(position, component + delta);
}

代码示例来源：origin: FudanNLP/fnlp

private void initBaseDist() {
  for (int i = 0; i < classCenter.size(); i++) {
    float base = getBaseDist(i);
    baseDistList.add(base);
  }
  System.out.println("Finish init base distance list");
}

代码示例来源：origin: redisson/redisson

public CtField[] getFields() {
  ArrayList alist = new ArrayList();
  getFields(alist, this);
  return (CtField[])alist.toArray(new CtField[alist.size()]);
}

代码示例来源：origin: libgdx/libgdx

public void mouseDragged (MouseEvent event) {
    if (dragIndex == -1 || dragIndex == 0 || dragIndex == percentages.size() - 1) return;
    float percent = (event.getX() - gradientX) / (float)gradientWidth;
    percent = Math.max(percent, percentages.get(dragIndex - 1) + 0.01f);
    percent = Math.min(percent, percentages.get(dragIndex + 1) - 0.01f);
    percentages.set(dragIndex, percent);
    repaint();
  }
});

代码示例来源：origin: stanfordnlp/CoreNLP

public static void main(String [] argv) throws Exception {
  if (argv.length != 1) {
   log.info("Usage: java AceDomReader <APF file>");
   System.exit(1);
  }

  File f = new File(argv[0]);
  AceDocument doc = parseDocument(f);
  System.out.println("Processed ACE document:\n" + doc);
  ArrayList<ArrayList<AceRelationMention>> r = doc.getAllRelationMentions();
  System.out.println("size: " + r.size());
 }
}

代码示例来源：origin: apache/flink

@Override
  public void reduce(Iterable<Tuple2<Long, Long>> values, Collector<Tuple2<Long, Long[]>> out) {
    neighbors.clear();
    Long id = 0L;
    for (Tuple2<Long, Long> n : values) {
      id = n.f0;
      neighbors.add(n.f1);
    }
    out.collect(new Tuple2<Long, Long[]>(id, neighbors.toArray(new Long[neighbors.size()])));
  }
}

代码示例来源：origin: redisson/redisson

/**
 * Returns exception chain starting from top up to root cause.
 */
public static Throwable[] getExceptionChain(Throwable throwable) {
  ArrayList<Throwable> list = new ArrayList<>();
  list.add(throwable);
  while ((throwable = throwable.getCause()) != null) {
    list.add(throwable);
  }
  Throwable[] result = new Throwable[list.size()];
  return list.toArray(result);
}

代码示例来源：origin: ReactiveX/RxJava

@Test
public void testFirstGroupsCompleteAndParentSlowToThenEmitFinalGroupsWhichThenSubscribesOnAndDelaysAndThenCompletes() throws InterruptedException {
  System.err.println("----------------------------------------------------------------------------------------------");
  final CountDownLatch first = new CountDownLatch(2); // there are two groups to first complete
  final ArrayList<String> results = new ArrayList<String>();
  Flowable.unsafeCreate(new Publisher<Integer>() {
  System.out.println("Results: " + results);
  assertEquals(6, results.size());

代码示例来源：origin: ReactiveX/RxJava

@Test
public void testStart() {
  Observable<String> os = OBSERVABLE_OF_5_INTEGERS
      .zipWith(OBSERVABLE_OF_5_INTEGERS, new BiFunction<Integer, Integer, String>() {
        @Override
        public String apply(Integer a, Integer b) {
          return a + "-" + b;
        }
      });
  final ArrayList<String> list = new ArrayList<String>();
  os.subscribe(new Consumer<String>() {
    @Override
    public void accept(String s) {
      System.out.println(s);
      list.add(s);
    }
  });
  assertEquals(5, list.size());
  assertEquals("1-1", list.get(0));
  assertEquals("2-2", list.get(1));
  assertEquals("5-5", list.get(4));
}

代码示例来源：origin: apache/incubator-dubbo

/**
 * Adds a list/map reference.
 */
@Override
public int addRef(Object ref) {
  if (_refs == null)
    _refs = new ArrayList();
  _refs.add(ref);
  return _refs.size() - 1;
}

代码示例来源：origin: ReactiveX/RxJava

@Test
public void testStartEmptyObservables() {
  Observable<String> o = Observable.zip(Observable.<Integer> empty(), Observable.<String> empty(), new BiFunction<Integer, String, String>() {
    @Override
    public String apply(Integer t1, String t2) {
      return t1 + "-" + t2;
    }
  });
  final ArrayList<String> list = new ArrayList<String>();
  o.subscribe(new Consumer<String>() {
    @Override
    public void accept(String s) {
      System.out.println(s);
      list.add(s);
    }
  });
  assertEquals(0, list.size());
}