Guava Primitives
基本类型对应关系
| jdk原生类型 | com.google.common.primitives.* |
| byte | Bytes, SignedBytes, UnsignedBytes |
| short | Shorts |
| int | Ints,UnsignedInteger, UnsignedInts |
| long | Longs, UnsignedLong, UnsignedLongs |
| float | Floats |
| double | Doubles |
| char | Chars |
| boolean | Booleans |
工具
| Arrays.asList | 把数组转为相应包装类的List |
| Collection.toArray() | 把集合拷贝为数组，和collection.toArray()一样线程安全 |
| Iterables.concat | 串联多个原生类型数组 |
| Collection.contains | 判断原生类型数组是否包含给定值 |
| List.indexOf | 给定值在数组中首次出现处的索引，若不包含此值返回-1 |
| List.lastIndexOf | 给定值在数组最后出现的索引，若不包含此值返回-1 |
| Collections.min | 数组中最小的值 |
| Collections.max | 数组中最大的值 |
| Joiner.on(separator).join | 把数组用给定分隔符连接为字符串 |
| Ordering.natural().lexicographical() | 按字典序比较原生类型数组的Comparator |
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