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Java 5 - Java 10 新特性总结
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#### 思维导图
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##### Java 5
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1. 泛型
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2. 注解
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3. 枚举
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4. 增强循环（for-each）
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5. 自动装箱/拆箱
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6. 可变长参数
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7. 静态导入
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##### Java 6
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##### Java 7
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1. Switch 中可以使用字符串
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2. 泛型实例化类型自动推断
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3. Try-with-resources 和 AutoCloseable
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4. Try-catch 可以可捕获多个异常
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##### Java 8
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1. 接口可以有默认方法（default 关键字）
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2. Lambda 表达式
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3. 可重复注解（@Repeatable）
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4. HashMap 改进
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##### Java 9
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##### Java 10
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1. 局部变量类型推断（var）
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##### Java8 以后可参考
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[聊聊 Java8 以后各个版本的新特性](https://juejin.im/post/6844903918586052616)
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