ArrayList 过滤器 [英] ArrayList filter

问题描述

如何从 Java ArrayList 中过滤掉某些内容，例如:

How can you filter out something from a Java ArrayList like if you have:

1. 你好吗
2. 你好吗
3. 乔
4. 迈克

过滤器是如何"删除乔和迈克.

And the filter is "How" it will remove Joe and Mike.

推荐答案

可能最好的方法是使用 Guava

Probably the best way is to use Guava

List<String> list = new ArrayList<String>();
list.add("How are you");
list.add("How you doing");
list.add("Joe");
list.add("Mike");
    
Collection<String> filtered = Collections2.filter(list,
    Predicates.containsPattern("How"));
print(filtered);

印刷品

How are you
How you doing

如果您想将过滤后的集合作为列表，您可以使用它(也来自 Guava):

In case you want to get the filtered collection as a list, you can use this (also from Guava):

List<String> filteredList = Lists.newArrayList(Collections2.filter(
    list, Predicates.containsPattern("How")));

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