How to check if a String contains another String in a case insensitive manner in Java?

Yes, contains is case sensitive. You can use java.util.regex.Pattern with the CASE_INSENSITIVE flag for case insensitive matching:

Pattern.compile(Pattern.quote(wantedStr), Pattern.CASE_INSENSITIVE).matcher(source).find();

EDIT: If s2 contains regex special characters (of which there are many) it’s important to quote it first. I’ve corrected my answer since it is the first one people will see, but vote up Matt Quail’s since he pointed this out.

Related Posts:

  1. How do I convert a String to an int in Java?
  2. How to format strings in Java
  3. Java – Convert integer to string [duplicate]
  4. How to split a string in Java
  5. How do I compare strings in Java?
  6. How to convert a char to a String?
  7. How to convert/parse from String to char in java?
  8. Reverse a string in Java
  9. Reverse a string in Java
  10. Java String Split by “|”
  11. Convert String to double in Java
  12. Java String new line
  13. Java split string to array [duplicate]
  14. String concatenation: concat() vs “+” operator
  15. How to remove the last character from a string?
  16. Java string to date conversion
  17. How to replace � in a string
  18. Change date format in a Java string
  19. What are all the escape characters?
  20. Converting String to “Character” array in Java
  21. Best way to convert an ArrayList to a string
  22. Best way to convert an ArrayList to a string
  23. How to split a String by space
  24. String interpolation in Java 14 or 15
  25. How can I prevent java.lang.NumberFormatException: For input string: “N/A”?
  26. How to remove single character from a String
  27. How to parse this string in Java?
  28. How to convert any Object to String?
  29. How to split a string in Java
  30. Illegal Escape Character “\”
  31. Can I multiply strings in Java to repeat sequences?
  32. What does regular expression \\s*,\\s* do?
  33. How to convert a Binary String to a base 10 integer in Java
  34. Left Hand Side of an Assignment must be a Variable CharAt
  35. How to capitalize the first letter of a String in Java?
  36. catDog string problem at Codingbat.com
  37. Java way to check if a string is palindrome
  38. Return string Input with parse.string
  39. What is the difference between String.subString() and String.subSequence()
  40. How do I apply the for-each loop to every character in a String?
  41. Java – removing first character of a string
  42. Java compressing Strings
  43. Explain the use of a bit vector for determining if all characters are unique
  44. Explain the use of a bit vector for determining if all characters are unique
  45. Convert array of strings into a string in Java
  46. Sort a single String in Java
  47. How to remove single character from a String
  48. How to remove single character from a String
  49. What is Java String interning?
  50. What is Java String interning?
  51. What is Java String interning?
  52. Why is there no String.Empty in Java?
  53. Java split string to array
  54. Using Enum values as String literals
  55. What is the easiest/best/most correct way to iterate through the characters of a string in Java?
  56. int cannot be converted to string?
  57. How to check if my string is equal to null?
  58. what is Ljava.lang.String;@
  59. Convert String to int array in java
  60. Converting String Array to an Integer Array
  61. How to sort an array of objects in Java?
  62. How to sort an array of objects in Java?
  63. How to compress a String in Java?
  64. java.lang.NumberFormatException: empty String
  65. How to check if a String is numeric in Java
  66. How to replace a substring of a string
  67. Converting A String To Hexadecimal In Java
  68. Immutable class?
  69. Converting a string to an integer on Android
  70. Simple way to repeat a string
  71. Java end of file
  72. Unclosed Character Literal error
  73. Java: how to initialize String[]?
  74. Regular Expressions on Punctuation
  75. Add String Array to ArrayList
  76. StringIndexOutOfBoundsException String index out of range: 0
  77. How to extract a substring using regex
  78. difference between equals() and hashCode()
  79. How can I check if a single character appears in a string?
  80. Difference between String replace() and replaceAll()
  81. Java String to SHA1
  82. Replace a character at a specific index in a string?
  83. Determine if a String is an Integer in Java [duplicate]
  84. How to convert a String to CharSequence?
  85. How do I convert a String to a BigInteger?
  86. How can I remove a substring from a given String?
  87. Java get String CompareTo as a comparator object
  88. How to use regex in String.contains() method in Java
  89. How to swap String characters in Java?
  90. Get an OutputStream into a String
  91. Difference between string object and string literal
  92. How to convert a String into an ArrayList?
  93. java: use StringBuilder to insert at the beginning
  94. How do I get the last character of a string?
  95. Cannot invoke toString() on the primitive type int
  96. How to compare character ignoring case in primitive types
  97. Append a single character to a string or char array in java?
  98. convert string to arraylist in java
  99. How to insert multiple tabs string in java?
  100. Append a single character to a string or char array in java?

Leave a Comment

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)