Java – String startsWith() Method example

The method startsWith() is used for checking prefix of a String. It returns a boolean value true or false based on whether the specified string is prefix of the particular String or not.
boolean startsWith(String str): It returns true if the str is a prefix of the String.
boolean startsWith(String str, index fromIndex): It returns true if the String begins with str, it starts looking from the specified index “fromIndex”.

Example

public class StartsWithExample{
   public static void main(String args[]) {
       String str= new String("quick brown fox jumps over the lazy dog");
       System.out.println("String str starts with quick: "+str.startsWith("quick"));
       System.out.println("String str starts with brown: "+str.startsWith("brown"));
       System.out.println("substring of str(starting from 6th index) has brown prefix: "
+str.startsWith("brown", 6));
       System.out.println("substring of str(starting from 6th index) has quick prefix: "
+str.startsWith("quick", 6));

   }
}

Output:

String str starts with quick: true
String str starts with brown: false
substring of str(starting from 6th index) havs brown prefix: true
substring of str(starting from 6th index) havs quick prefix: false