Lock Ordering and Deadlock

Which potential concurrency problem is illustrated by the provided code?

public class LockOrdering {
    private final Object lockA = new Object();
    private final Object lockB = new Object();
    
    public void methodA() {
        synchronized(lockA) {
            for (int i = 0; i < 100; i++);
            synchronized(lockB) {
                System.out.println("A");
            }
        }
    }
    
    public void methodB() {
        synchronized(lockB) {
            for (int i = 0; i < 100; i++);
            synchronized(lockA) {
                System.out.println("B");
            }
        }
    }
    
    public static void main(String[] args) {
        LockOrdering lo = new LockOrdering();
        Thread t1 = new Thread(() -> lo.methodA());
        Thread t2 = new Thread(() -> lo.methodB());
        t1.start();
        t2.start();
    }
}