Serialization basics

What will be the output of the following code?

import java.io.Serializable;

public class TransientFields implements Serializable {
  
    private static final long serialVersionUID = -8385655899811016412L;
  
    private final int a;
    private final transient int b;
  
    public TransientFields(int a, int b) {
        this.a = a;
        this.b = b;
    }
  
    @Override
    public String toString() {
        return Integer.toString(a) + " " + Integer.toString(b);
    }
  
    public static void main(String[] args) {
        TransientFields transientFields = new TransientFields(10, 20);
    
        // Function that serializes and deserializes object back and forth
        transientFields = Utils.serializeDeserialize(transientFields);
        System.out.println(transientFields);
    }
}