Console.WriteLine( "The ArrayList initially contains the following:" ); PrintValues( myAL, '\t' ); Console.WriteLine( "The Queue initially contains the following:" ); PrintValues( myQueue, '\t' ); // Copies the Queue elements to the end of the ArrayList. myAL.AddRange( myQueue );...
设置了ArrayList初始容量: 26 ms 1. 2. 分析: 在list.add()方法执行时,先调用ArrayList的: /** * Appends the specified element to the end of this list. * * @param e element to be appended to this list * @return true (as specified by {@link Collection#add}) */ public boolean add(E ...
ArrayList<String>list1=newArrayList<>();//list 1list1.add("A");list1.add("B");list1.add("C");list1.add("D");ArrayList<String>list2=newArrayList<>();//list 2list2.add("E");list2.add("F"); 2.1. Appending Items to End of ArrayList By default, theaddAll()method appends the...
ArrayList是平时相当常用的List实现, 其中boolean add(E e)的实现比较直接: /** * Appends the specified element to the end of this list. * * @param e element to be appended to this list * @return true (as specified by {@link Collection#add}) */ public boolean add(E e) { ensureCapacity...
* Appends the specified element to the end of this list. * * @parameelement to be appended to this list * @returntrue(as specified by {@link Collection#add}) */ public booleanadd(Ee) { ensureCapacityInternal(size+1);// Increments modCount!! elementData[size...
ArrayList 集合是不安全的,它里面的方法是没有加锁的。 多个线程同时进行读写操作时,就会导致集合内部撕裂,从而报错。 查看ArraysList 的 add方法源码: /** * Appends the specified element to the end of this list. * * @param e element to be appended to this list ...
The ArrayList.add() in Java adds a single element to the list, either at the end of the list or at the specified index position. Always use generics for compile-time type safety while adding the element to the arraylist. 1. ArrayList.add() Method The add() method first ensures that ...
4:// ArrayList of String type 5:ArrayList<String> al =newArrayList<String>(); 6:// simple add() methods for adding elements at the end 7:al.add("Hi"); 8:al.add("hello"); 9:al.add("String"); 10:al.add("Test"); 11://adding element to the 4th position ...
Java ArrayList.add 的实现方法 ArrayList是平时相当常用的List实现, 其中boolean add(E e) 的实现比较直接: /** * Appends the specified element to the end of this list. * * @param e element to be appended to this list * @returntrue(as specified by {@link Collection#add}) ...
Console.WriteLine( "The ArrayList initially contains the following:" ); PrintValues( myAL, '\t' ); Console.WriteLine( "The Queue initially contains the following:" ); PrintValues( myQueue, '\t' ); // Copies the Queue elements to the end of the ArrayList. myAL.AddRange( myQueue );...