./jad ArrayListTest.class 1. 得到ArrayListTest.jad 文件,直接用文本编辑器打开即可: public class ArrayListTest { public ArrayListTest() { } public static void main(String args[]) { ArrayList arraylist = new ArrayList(); arraylist.add("java"); arraylist.add("kotlin"); arraylist.add("dart");...
*/ public void trimToSize() { modCount++; if (size < elementData.length) { elementData = Arrays.copyOf(elementData, size); } } /** * Increases the capacity of this ArrayList instance, if * necessary, to ensure that it can hold at least the number of elements * specified by the minim...
*@throwsIndexOutOfBoundsException {@inheritDoc}*/publicE remove(intindex) { rangeCheck(index); modCount++; E oldValue=elementData(index);intnumMoved = size - index - 1;if(numMoved > 0) System.arraycopy(elementData, index+1, elementData, index, numMoved); elementData[--size] =null;//cl...
booleanaddAll(int index,Collection<? extendsE> c) Inserts all of the elements in the specified collection into this list, starting at the specified position. voidclear() Removes all of the elements from this list. Objectclone() Returns a shallow copy of thisArrayListinstance. ...
publicvoidstateChanged(ChangeEvent event){JSlider slider=(JSlider)event.getSource();int value=slider.getValue();...} 可以通过显示标尺(tick)对滑块进行修饰。例如,在示例程序中,第二个滑块使用了如下的设置: slider.setMajorTickSpacing(20);
说明:subList 返回的是 ArrayList 的内部类 SubList,并不是 ArrayList ,而是 ArrayList 的一个视图,对于 SubList 子列表的所有操作最终会反映到原列表上。 【强制】使用集合转数组的方法,必须使用集合的 toArray(T[] array),传入的是类型完全一样的数组,大小就是 list.size()。
ArrayList 类的对象，这个 ArrayList 类是 Arrays 类里的一个私有静态类（java.util.Arrays.ArrayList）...
Change in javax.smartcardio.Card.disconnect(boolean reset) method behaviorPrior to the JDK 8u20 and JDK 7u72 releases, the javax.smartcardio.Card.disconnect(boolean reset) method had inverted logic for the 'reset' boolean value passed to it. The card was reset upon a disconnect if false was...
De-serializing a MessageFormat object with an ArgumentIndex value at or over the limit will throw an InvalidObjectException. Bug Fixes This release also contains fixes for security vulnerabilities described in the Oracle Critical Patch Update (CPU) Jul 2024 for Oracle Java SE (Doc ID 2992318.1)....
1、String s = String.valueOf(i); 2、String s = Integer.toString(i); 3、String s = “” + i; char > String String.valueOf(‘c’)//效率最高 List <> Set 1、List转Set //list为null会报错 private static void listToSet() { List<String> list = new ArrayList<>(); list.add("va...