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CyC2018 2018-03-23 21:39:49 +08:00
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commit 60e4448e71

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@ -131,7 +131,7 @@ if x.equals(y) && y.equals(z) {
多次调用 equals() 方法结果不变
```java
x.equals(y) == x.equals(y) == x.equals(y) == x.equals(y); // true
x.equals(y) == x.equals(y); // true
```
**5. 与 null 的比较**