Java String startsWith() Function Example Tutorial

Java String startsWith() Function Example Tutorial

Java String startsWith() method does not accept regular expression as argument. If we pass and regex pattern as argument, it will treat as normal string.

Java string startsWith() is an inbuilt method of  String class that is used for checking the prefix of the String. The startsWith() method can either start checking from the first index or can start checking from a specified index. It returns the boolean value true or false based on whether the given string begins with the specified letter or word.

At times it is required to check whether a particular string starts with a given prefix or not. Java takes care of this through its java.lang.String.startsWith() method.  This leads to two variants of the method:

  1. public boolean startsWith(String prefix)
  2. public boolean startsWith(String prefix, int index)

java java string startswith

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