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Java String Substring Example

Submitted by Andr on Tue, 10/26/2010 - 20:23

Java Examples

/*
Java substring example.
This Java substring example describes how substring method of
Java String class can be used to get substring of the given Java string object.
*/
 
public class JavaSubstringExample{
    
    public static void main(String args[]){
       
        /*        
        Java String class defines two methods to get substring from the given
        Java String object.
       
        1) public String substring(int startIndex)        
        This method returns new String object containing the substring
        of the given string from specified startIndex (inclusive).
       
        IMPORTANT: This method can throw IndexOutOfBoundException if
        startIndex is negative or grater than length of the string.
       
        2) public String substring(int startIndex,int endIndex)        
        This method returns new String object containing the substring of the
        given string from specified startIndex to endIndex.
       
        Here, startIndex is inclusive while endIndex is exclusive.
       
        IMPORTANT: This method can throw IndexOutOfBoundException
        if startIndex is negative and if startIndex of endIndex is
        grater than the string length.
       
        */
       
        String name="Hello World";
       
        //This will print the substring starting from index 6        
        System.out.println(name.substring(6));
       
        /*
        This will print the substring starting from index 0 up to 4 not 5.
        IMPORTANT: Here startIndex is inclusive while endIndex is exclusive.
        */
       
        System.out.println(name.substring(0,5));
       
    }
 
}
 
/*
OUTPUT of the above given Java substring Example would be:
World
Hello
*/

Andr's blog

the second println would

Submitted by Anonymous on Wed, 12/01/2010 - 20:39.

the second println would actually ouput: Hello_ (There would not be an underscore, but a space.)

I do not agree, it will just

Submitted by Anonymous on Thu, 12/02/2010 - 13:01.

I do not agree, it will just print "hello" as given in the example. Remember, start index is inclusive, but end index is exclusive (means will not be included). So start from index 0 to 4 will be assigned to substring and hence it will be "hello" ('h' at index 0 to 'o' at index 4).

Hi ... if we given as

Submitted by Anonymous on Mon, 12/06/2010 - 19:36.

Hi ... if we given as name.substring(0,15) then what would be the result??? will you give me result... plz

As described in the example

Submitted by Anonymous on Tue, 12/07/2010 - 13:19.

As described in the example itself, it will throw IndexOutOfBoundException as 15 is grater than string length.

how can manipulate a

Submitted by Anonymous on Mon, 12/13/2010 - 12:16.

how can manipulate a substring in function

If for example you had to

Submitted by Anonymous on Wed, 01/26/2011 - 20:55.

If for example you had to create a user id from a mixture of their initial and 5 letters from their surname - Ie jblogg how could you make the program so it could still work if someone only had a 3 letter surname?