Is initialize map object using static block and declaration the same in Java?

Question

When I read some open source java projects, I found that there are two ways to declare a static list variable with a default value in the class.

Is there any difference between these two methods? (performance, pros or cons)

1. initialize Map object with all the initial values along with declaration:

public class OrderStatusHandler {

    private static final Map<Integer, String> ORDER_STATUS = new HashMap<Integer, String>() {{
        ORDER_STATUS.put(0, 'UNPAID');
        ORDER_STATUS.put(1, 'PAID');
        ORDER_STATUS.put(2, 'FINISH');
    }};
    
    ...
}

2. initialize List object with static block:

public class OrderStatusHandler {

    private static final Map<Integer, String> ORDER_STATUS = new HashMap<Integer, String>();
    
    static {
        ORDER_STATUS.put(0, 'UNPAID');
        ORDER_STATUS.put(1, 'PAID');
        ORDER_STATUS.put(2, 'FINISH');
    }
    
    ...
}