indexOf Case Sensitive?

java case-sensitive
Brian picture Brian · Jul 14, 2009 · Viewed 109.6k times · Source

Is the indexOf(String) method case sensitive? If so, is there a case insensitive version of it?

Answer

Joey picture Joey · Jul 14, 2009

The indexOf() methods are all case-sensitive. You can make them (roughly, in a broken way, but working for plenty of cases) case-insensitive by converting your strings to upper/lower case beforehand:

s1 = s1.toLowerCase(Locale.US);
s2 = s2.toLowerCase(Locale.US);
s1.indexOf(s2);

Related questions

Is Java RegEx case-insensitive?

In Java, when doing a replaceAll to look for a regex pattern like: replaceAll("\\?i\\b(\\w+)\\b(\\s+\\1)+\\b", "$1"); (to remove duplicate consecutive case-insensitive words, e.g. Test test), I'm not sure where I put the ?i. I read …

Read More
How to compare character ignoring case in primitive types

I am writing these lines of code: String name1 = fname.getText().toString(); String name2 = sname.getText().toString(); aru = 0; count1 = name1.length(); count2 = name2.length(); for (i = 0; i < count1; i++) { for (j = 0; j < count2; j++) { if (name1.charAt(i)==…

Read More
Case insensitive matching in Java switch-case statement

I was wondering if there is a way to perform case insensitive match in java switch case statement. the default implementation is case sensitive. Please see the example below. public class SwitchCaseTest { /** * @param args */ public static void main(String[] args) { …

Read More