/* package whatever; // don't place package name! */
 
import java.util.*;
import java.util.stream.*;
import java.io.*;
 
/* 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
	{
    String input = "str1=wordA&str2=wordB&desc3=&int=0";
		Map<String, String> pairs = Arrays.stream(input.split("&"))
        .map(s -> s.split("=", -1))
        .collect(Collectors.toMap(a -> a[0], a -> a[1]));
    System.out.println(pairs);
 
	}
}

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