关于内部类用static修饰解决方法

public class DeadlockRisk {     private static class Resource {         public int value;     }     private Resource resourceA = new Resource();     private Resource resourceB = new Resource();     public int read() {         synchronized (resourceA) {             synchronized (resourceB) {                 return resourceB.value + resourceA.value;             }         }     }     public void write(int a, int b) {         synchronized (resourceB) {             synchronized (resourceA) {                 resourceA.value = a;                 resourceB.value = b;             }         }     } }