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Merge pull request #2232 from qiaoxingxing/feature-fix

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完善说法，避免歧义
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docs/java/basis/syntactic-sugar.md
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@ -758,7 +758,8 @@ class GT<T>{
以上代码输出结果为：2！
由于经过类型擦除，所有的泛型类实例都关联到同一份字节码上，泛型类的所有静态变量是共享的。
有些同学可能会误认为泛型类是不同的类，对应不同的字节码，其实
由于经过类型擦除，所有的泛型类实例都关联到同一份字节码上，泛型类的静态变量是共享的。上面例子里的`GT<Integer>.var`和`GT<String>.var`其实是一个变量。
### 自动装箱与拆箱