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

What is OpenJDK? OpenJDk or Open Java Development Kit is a free, open-source framework of the Java Platform, Standard Edition (or Java SE).

Java String is an inbuilt class that deals with all that is written in double quotation marks, or other words string is a collection of characters.

Java String Programs will talk about top 10 important programs in java strings with examples.

Java String length(). Java provides a in-built java.lang.String.length() method. Length of a String is essentially the number of 16-bit Unicode characters.

In this post, we will be discussing about a new concept, Java String. String is a sequence of characters. But in Java, a string is an object that represents a sequence of characters. The java.lang.String class is used to create string object.