/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
 
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		final String regex = "[a-z][:=]\\h*(\\d+(?:[.,]\\d+)?)";
		final String string = "a: 1 | b=2 ; c=3.2 / d=4,2";
 
		final Pattern pattern = Pattern.compile(regex);
		final Matcher matcher = pattern.matcher(string);
 
		while (matcher.find()) {
		    System.out.println(matcher.group(1));
		}
	}
}

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