键值对:键必须唯一,值可以重复 HashMap:put、get、remove Map的遍历方式1:keySet方法(迭代器和for循环) Map的遍历方式2:entrySet方法 迭代器 for:增强for不能遍历Map,这里遍历的是Set Hashmap集合存储于遍历 LinkedHashMap保证存储顺序 Hashtable:已经被HashMap取代 Properties与IO流结合使用 静态... ...
//Iteration example Iterator<Integer> iterator = pairs.keySet().iterator(); while(iterator.hasNext()) { Integer key = iterator.next(); System.out.println("Key: "+ key +", Value: "+ pairs.get(key)); } //Remove example pairs.remove(3); ...
keySet()); } } Example 5Source File: ChanLocator.java From Dashchan with Apache License 2.0 5 votes public final String getPreferredHost() { String host = Preferences.getDomainUnhandled(getChanName()); if (StringUtils.isEmpty(host)) { for (LinkedHashMap.Entry<String, Integer> entry : ...
Example Open Compiler importjava.util.*;importjava.lang.*;publicclassCartimplementsComparable<Cart>{Stringitem;doubleprice;Cart(Stringitem,doubleprice){// this keyword shows these variables belongs to constructorthis.item=item;this.price=price;}// method for converting object into stringpublicStringtoSt...
empSal.remove("Nilesh"); System.out.println("Updated Map: "+empSal);// Printing full Map //Printing all Keys System.out.println(empSal.keySet()); //Printing all Values System.out.println(empSal.values()); } } Output: Java LinkedHashMap ...
keySet() ) { last = key; } suspendedIssues.get( last ).peek().push( issue ); } } Example 3Source File: ManLog_8.java From manifold with Apache License 2.0 6 votes void popSuspendIssues( JCTree tree ) { LinkedHashMap<JCTree, Stack<Stack<JCDiagnostic>>> suspendedIssues = _suspended...