/** * The default initial capacity - MUST be a power of two. */static final int DEFAULT_INITIAL_CAPACITY = 1 << 4; // aka 16/** * The load factor used when none specified in constructor. */static final float DEFAULT_LOAD_FACTOR = 0.75f;在HashMap当中，数组的默认初始化容量为16，...
对象实现java.io.Serializable接口以后，序列化的动作不仅取决于对象本身，还取决于执行序列化的对象。以O...
5. void addAll(int index, Object o):用于在列表中的特定位置添加特定元素。例如,假设我们想在列表中的位置 2 处放置一个特定的元素 “Shubh”,我们将调用 add(int index, Object o) 方法,如下所示: list.add(2,"Shubh"); // This will add "Shubh" at the second position. 让我们以一个基于上述 ...
In addition to implementing the List interface, this class provides methods to manipulate the size of the array that is used internally to store the list. (This class is roughly equivalent to Vector, except that it is unsynchronized.) list接口的实现。 Common ArrayList methods and constructors 常...
* The load factor used when none specified in constructor. */staticfinal floatDEFAULT_LOAD_FACTOR=0.75f; 在HashMap当中,数组的默认初始化容量为16,当数据填充到默认容量的0.75时,就会进行2倍扩容。当然,使用者也可以在初始化时传入指定大小。但需要注意的是,最好是2的n次方的数值,如果未设置为2的n次方,...
ArrayList//2、当添加第一个元素时，elementData 长度会扩展为 DEFAULT_CAPACITY=10transient Object[] ...
* The load factor used when none specified in constructor. */ static final float DEFAULT_LOAD_FACTOR = 0.75f; 在HashMap当中,数组的默认初始化容量为16,当数据填充到默认容量的0.75时,就会进行2倍扩容。当然,使用者也可以在初始化时传入指定大小。但需要注意的是,最好是2的n次方的数值,如果未设置为2的...
A constructor used when creating managed representations of JNI objects; called by the runtime. C# Copy protected ArrayList(IntPtr javaReference, Android.Runtime.JniHandleOwnership transfer); Parameters javaReference IntPtr A IntPtrcontaining a Java Native Interface (JNI) object reference. transfer...
Exceptioninthread"main"java.lang.ArrayIndexOutOfBoundsExceptionat sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessor...
Constructor Details ArrayList(int) ArrayList() ArrayList(Collection) Method Details trimToSize() ensureCapacity(int) size() isEmpty() contains(Object) indexOf(Object) lastIndexOf(Object) clone() toArray() toArray(T[]) get(int) getFirst() getLast() set(int, E) add(E) add(int, E) ...