We can use Java regular expression quantifiers to specify number of occurrences to match.

We can use quantifiers to specify number of occurrences to match.
a: exactly one a
a+: at least one a
a*: any number of a including zero number also
a?: at most one a

let's see a demo program by using quantifiers:

import java.util.regex.Matcher;
import java.util.regex.Pattern;
class RegExDemo3
{
	public static void main(String[] args)
	{
		Pattern p=Pattern.compile("x");
		Matcher m=p.matcher("abaabaaab");
		while(m.find())
		{
			System.out.println(m.start()+"..."+m.group());
		}
	}
}

Output

Pattern class split():

We can use Pattern class split() method to split the given target string according to the given pattern.

import java.util.regex.Matcher;
import java.util.regex.Pattern;
class RegExDemo4
{
	public static void main(String[] args)
	{
		Pattern p=Pattern.compile("\\s");
		String[] s=p.split("Silan Software Services"); 
		for(String s1:s)
		{
			System.out.println(s1);
		}
	}
}

Output
Silan
Software
Services

String class split():

String class also contains split() method to split given target string according to particular pattern.

Example

String s="Silan Software";
String[] s1=s.split("Silan Software");
for(String s2:s1)
{
	System.out.println(s2);
}

Output
Silan
Software

NOTE: The Pattern class split can take target string as an argument where as String class split() can take