Apache Commons Lang 3.0 is a java library with lot of utilities and reusable components.
This requires the library commons-lang3-3.0.1.jar to be in classpath.
The following example shows using StringUtils.removeEndIgnoreCase() API.
It removes the substring from the source string if it ends with substring irrespective of the case
otherwise returns the source string.
System.out.println(StringUtils.removeEndIgnoreCase(null, "coder"));
System.out.println(StringUtils.removeEndIgnoreCase("be the coder", "coder"));
System.out.println(StringUtils.removeEndIgnoreCase("be the coder", "CODER"));
System.out.println(StringUtils.removeEndIgnoreCase("be the coder", "the"));
}