Regex to find a specific word in a string in java

Question

I need some help with regular expressions: I\'m trying to check if a sentence contains a specific word.

let\'s take for example the title of this topic:

\"Re

Answer 1

A good knowledge of Regular Expression can solve your task

In your case

String str = "Regex to find a specific word in a string in java"
        str.matches(".*?\\bif\\b.*?");  \\ return false
String str1 = "print a word if you found"
        str1.matches(".*?\\bif\\b.*?");  \\ return true

A short explanation:

. matches any character,

*? is for zero or more times,

\b is a word boundary.

A good Explanation of Regular expression can be found Here

Answer 2

Use this to match specific words in a string:

   String str="Regex to find a specific word in a string";
   System.out.println(str.matches(".*\\bif\\b.*"));   //false 
   System.out.println(str.matches(".*\\bto\\b.*"));   //true

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Answer 3

Use the following regular expression:

".*\\bif\\b.*"

\b match word boundary.