The string ends with example will check if a string ends with a specified String while this example will show how to check if a string starts with a specified prefix using java, regular expression, apache commons and springframework. Each snippet will contain a String that represents a URL address and will validate that it starts with http.
Straight up Java
This snippet will demonstrate how to use the String.startsWith method. The startWith method will return true if the argument is the prefix of the String or false otherwise.
Starts with regex
We can also can pass a regular expression to the String.startWith.
Apache commons StringUtils.startsWith will check if a CharSequence starts with a specified prefix and returning true if it does, otherwise false.
Starts with any
Another useful method contained in apache commons is StringUtils.startsWithAny. This will perform the same behavior as the startsWith but instead of checking a single value, it will compare against a series of specified strings contained in the array.
Each of the snippets above are case sensitive while the spring framework code is a bit different. Calling the StringUtils.startsWithIgnoreCase will check if it starts with a character but will ignore the upper and lower case.