java常见类源码和注释.doc

java常见类源码 package java.util;import java.util.function.Predicate;import java.util.stream.Stream;import java.util.stream.StreamSupport;public interface CollectionE extends IterableE{/** 返回Collection中元素的个数*/ int size();/** 返回true如果Collection中没有元素 */ boolean isEmpty();/** 返回true如果Collection中包含指定的元素*/ boolean contains(Object o);/** 返回一个迭代器*/ IteratorE iterator();/** 返回包含Collection中所有元素的对象数组*/ Object[] toArray();/** 返回数组*/ T T[] toArray(T[] a);/** 向Collection中添加元素，如何添加成功则返回true,否则返回false*/ boolean add(E e);/** 从Collection中删除指定的元素*/ boolean remove(Object o);/** 如果Collection中包含指定Collection中的全部元素则返回true,否则返回false*/ boolean containsAll(Collection? c);/** 如果成功将指定Collection中的元素全部添加到Collection中则返回true,否则返回false*/ boolean addAll(Collection? c);/** 如果成功将Collection中被包含在指定Collection中的元素删除则返回true,否则返回false*/ boolean removeAll(Collection? c);/** Removes all of the elements of this collection that satisfy the given predicate. Errors or runtime exceptions thrown during iteration or by the predicate are relayed to the caller.*/ default boolean removeIf(Predicate? super E filter){ Objects.requireNonNull(filter); boolean removed = false; final IteratorE each = iterator(); while(each.hasNext()){ if(filter.test(each.next())){ each.remove(); removed = true; } } return removed; }/** 如果成功删除Collection中不被包含在指定Collection的元素则返回true,否则返回false*/ boolean retainAll(Collection? c);/** 删除Collection中所有的元素*/ void clear();/** 判断Collection和指定的对象是否相等，相等则返回true,否则返回false*/ boolean equals(Objects o);/** 获取Collection的散列代码值*/ int hashCode();/** 返回一个Spliterator类型的对象 */ @Override default SpliteratorE spliterator(){ return Spliterator.spliterator(this, 0); }/** 返回一个Stream类型的对象*/ default StreamE stream(){ return Str