java 在java中搜索单词内的字符串
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search string inside a word in java
提问by Mohammad Adil
I want to search a word inside a string :
For example let the String be "ThisIsFile.java"
and let i want to search "File.java"
or "IsFile"
我想在字符串中搜索一个单词:例如让字符串成为"ThisIsFile.java"
并让我想要搜索"File.java"
或"IsFile"
This is something like sql 'like'
query but unfortunately i am not
getting that string from database.
这类似于 sql'like'
查询,但不幸的是我没有从数据库中获取该字符串。
Please suggest me any good solution for this. Thanks
请为此建议我任何好的解决方案。谢谢
回答by mmccomb
There's a variety of ways of achieving this and the method you choose will depend on the complexity of your queries. For a simple plain symbol/word match the String class provides a contains method that takes a single parameter, the String to search for - and returns true if it occurs within the search String.
有多种方法可以实现这一点,您选择的方法将取决于查询的复杂性。对于简单的简单符号/单词匹配,String 类提供了一个 contains 方法,该方法采用单个参数,即要搜索的字符串 - 如果它出现在搜索字符串中,则返回 true。
bool containsFile = myString.contains("file");
回答by Jon Skeet
Do you mean:
你的意思是:
if (haystack.contains(needle))
? Note that this won't respect word boundaries or anything like that - it just finds if one string (needle
) is a substring in another (haystack
).
? 请注意,这不会考虑单词边界或类似的东西 - 它只是查找一个字符串 ( needle
) 是否是另一个字符串 ( ) 中的子字符串haystack
。
回答by Chris Thompson
Try using String.contains()
. Also, check out the documentationfor more information about the method
尝试使用String.contains()
. 另外,请查看文档以获取有关该方法的更多信息
回答by Arj
You should be able to use
你应该可以使用
String.contains("some string");