建站容易吗,iis网站数据库失败,四川城乡和住房建设厅官方网站,分析网站示例本文介绍了最好的Java5种遍历HashMap数据的写法#xff0c;分享给大家#xff0c;也给自己留一个笔记#xff0c;具体如下#xff1a;通过EntrySet的迭代器遍历Iterator Entry Integer, String iterator coursesMap.entrySet().iterator();while (iter…本文介绍了最好的Java5种遍历HashMap数据的写法分享给大家也给自己留一个笔记具体如下通过EntrySet的迭代器遍历Iterator Entry Integer, String iterator coursesMap.entrySet().iterator();while (iterator.hasNext()) {Entry Integer, String entry iterator.next();System.out.print(entry.getKey() . );System.out.println(entry.getValue());}输出结果如下zzw:how_iterate_hashmap_in_java zzw$ java IterateHashMapExample 1TIOBE Index for March 2020:1. Java2. C3. Python4. C5. C#6. Visual Basic .NET7. JavaScript8. PHP9. SQL10. GO通过KeySet的迭代器遍历Iterator Integer iterator coursesMap.keySet().iterator();while (iterator.hasNext()) {Integer key iterator.next();System.out.print(key . );System.out.println(coursesMap.get(key));}输出结果如下zzw:how_iterate_hashmap_in_java zzw$ java IterateHashMapExample 2TIOBE Index for March 2020:1. Java2. C3. Python4. C5. C#6. Visual Basic .NET7. JavaScript8. PHP9. SQL10. GO通过ForEach循环遍历for (Map.Entry Integer, String entry: coursesMap.entrySet()) {System.out.print(entry.getKey() . );System.out.println(entry.getValue());}输出结果如下zzw:how_iterate_hashmap_in_java zzw$ java IterateHashMapExample 3TIOBE Index for March 2020:1. Java2. C3. Python4. C5. C#6. Visual Basic .NET7. JavaScript8. PHP9. SQL10. GO通过Lambda表达式遍历coursesMap.forEach((key, value) - {System.out.print(key . );System.out.println(value);});输出结果如下zzw:how_iterate_hashmap_in_java zzw$ java IterateHashMapExample 4TIOBE Index for March 2020:1. Java2. C3. Python4. C5. C#6. Visual Basic .NET7. JavaScript8. PHP9. SQL10. GO通过Stream API遍历coursesMap.entrySet().stream().forEach((entry) - {System.out.print(entry.getKey() . );System.out.println(entry.getValue());});输出结果如下zzw:how_iterate_hashmap_in_java zzw$ java IterateHashMapExample 5TIOBE Index for March 2020:1. Java2. C3. Python4. C5. C#6. Visual Basic .NET7. JavaScript8. PHP9. SQL10. GO完整示例代码在这里到此这篇关于Java5种遍历HashMap数据的写法的文章就介绍到这了,更多相关Java遍历HashMap内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家
