I would like to load each line in a file into HashSet collection. Is there a simple way to do this?
我想将文件中的每一行加载到HashSet集合中。有一个简单的方法吗?
4 个解决方案
#1
13
How about:
Sets.newHashSet(Files.readLines(file, charSet));
(using Guava).
References:
#2
#3
2
Multiset can store duplicated strings, if your text contains duplicated lines. (add ordering)
如果您的文本包含重复的行,Multiset可以存储重复的字符串。 (添加订购)
Multiset<String> set = LinkedHashMultiset.create();
#4
0
With Apache Commons IO you have readLines which returns a List. You can then add all elements from the returned list into your HashSet (beware: type compatibility between List and Set, and loosing duplicated lines).
使用Apache Commons IO,您可以使用readLines返回List。然后,您可以将返回列表中的所有元素添加到HashSet中(注意:List和Set之间的类型兼容性,以及丢失重复的行)。
#1
13
How about:
Sets.newHashSet(Files.readLines(file, charSet));
(using Guava).
References:
#2
9
You can do
你可以做
Set<String> lines = new HashSet<String>(FileUtils.readLines(new File("foo.txt")));
Using the Apache Commons FileUtils class and the readlines method.
使用Apache Commons FileUtils类和readlines方法。
#3
2
Multiset can store duplicated strings, if your text contains duplicated lines. (add ordering)
如果您的文本包含重复的行,Multiset可以存储重复的字符串。 (添加订购)
Multiset<String> set = LinkedHashMultiset.create();
#4
0
With Apache Commons IO you have readLines which returns a List. You can then add all elements from the returned list into your HashSet (beware: type compatibility between List and Set, and loosing duplicated lines).
使用Apache Commons IO,您可以使用readLines返回List。然后,您可以将返回列表中的所有元素添加到HashSet中(注意:List和Set之间的类型兼容性,以及丢失重复的行)。