What is StringUtils.removeIgnoreCase() in Java?
The removeIgnoreCase() method
removeIgnoreCase() is a StringUtils class that is used to remove all occurrences of a substring from within the source string.
Different cases in removeIgnoreCase()
The comparison of the substring with the source string is case-insensitive in nature.
-
An empty source string will return the empty string.
-
An empty remove string will return the source string.
-
A
nullsource string will returnnull. -
A
nullremove string will return the source string.
How to import StringUtils
The definition of StringUtils can be found in the Apache Commons Lang package, which we can add to the Maven project by adding the following dependency to the pom.xml file:
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.12.0</version>
</dependency>
For other versions of the
commons-langpackage, refer to the Maven Repository.
You can import the StringUtils class as follows:
import org.apache.commons.lang3.StringUtils;
Syntax
public static String removeIgnoreCase(final String str, final String remove)
Parameters
final String str: The source string to search.final String remove: The string to search and remove.
Return value
This method returns the substring with the string removed, if found.
Code
import org.apache.commons.lang3.StringUtils;public class Main{public static void main( String args[] ) {// Example 1String sourceString = "hello-educative-hello-educative";String removalString = "eduCAT";System.out.printf("StringUtils.removeIgnoreCase(%s, %s) = %s", sourceString, removalString, StringUtils.removeIgnoreCase(sourceString, removalString));System.out.println();// Example 2sourceString = "hello-educative-hello-educative";removalString = "oll";System.out.printf("StringUtils.removeIgnoreCase(%s, %s) = %s", sourceString, removalString, StringUtils.removeIgnoreCase(sourceString, removalString));System.out.println();}}
Example 1
- Source String =
"hello-educative-hello-educative" - Removal String =
"eduCAT"
The method returns hello-ive-hello-ive, removing all the occurrences of the removal string from the source string without case-considerations.
Example 2
- Source String =
"hello-educative-hello-educative" - Removal String =
"oll"
The method returns hello-educative-hello-educative, i.e., the source string, as the removal string is not present in the source string.
Output
The output of the code will be as follows:
StringUtils.removeIgnoreCase(hello-educative-hello-educative, eduCAT) = hello-ive-hello-ive
StringUtils.removeIgnoreCase(hello-educative-hello-educative, oll) = hello-educative-hello-educative
Free Resources
- undefined by undefined
- undefined by undefined
