Iteration over collection views ofLinkedHashMapalso takes linear timeO(n)similar to that ofHashMap. On the flip side,LinkedHashMap‘s linear time performance during iteration is better thanHashMap‘s linear time
1. Map Overview There are 4 commonly used implementations of Map in Java SE - HashMap, TreeMap, Hashtable and LinkedHashMap. If we use one sentence to describe each implementation, it would be the following: HashMap is implemented as a hash table, and there is no ordering on keys or ...
add LinkedHashMap Jun 20, 2018 1 package java.util; 2 3 import java.util.function.Consumer; 4 import java.util.function.BiConsumer; 5 import java.util.function.BiFunction; 6 import java.io.IOException; 7 8 public class LinkedHashMap<K,V> 9 extends HashMap<K,V> 10 implem...
* Constructs an empty insertion-ordered <tt>LinkedHashMap</tt> instance * with the default initial capacity () and load factor (0.75). */publicLinkedHashMap(){super(); accessOrder =false; }/** * Constructs an insertion-ordered <tt>LinkedHashMap</tt> instance with * the same mappings as...
LinkedHahMap有两个属性: private transient Entry<K,V> header; private final boolean accessOrder; 构造方法有以下几种: 1.public LinkedHashMap(int initialCapacity, float loadFactor) { super(init…
add LinkedHashMap Jun 20, 2018 1 package java.util; 2 3 import java.util.function.Consumer; 4 import java.util.function.BiConsumer; 5 import java.util.function.BiFunction; 6 import java.io.IOException; 7 8 public class LinkedHashMap<K,V> 9 extends HashMap<K,V> 10 implem...
LinkedHashMap.Entry<K,V> last = tail; tail = p; //如果last == null,说明此前链表为空,则头结点应为 p if (last == null) head = p; else { //更新结点间的引用 p.before = last; last.after = p; } } //将结点 src 替换为 dst private void transferLinks(Linked...