Java基础类型对照表
| 数据类型 | 长度（位） | 默认值 | 封装类(都在java.lang包下) |
| byte | 8 | (byte)0 | Byte |
| short | 16 | (short)0 | Short |
| int | 32 | 0 | Integer |
| long | 64 | 0L | Long |
| float | 32 | 0.0f | Float |
| double | 64 | 0.0d | Double |
| char | 16 | \u0000 | Character |
| boolean | 1 | false | Boolean |
Java基础类型对照表
| 数据类型 | 长度（位） | 默认值 | 封装类(都在java.lang包下) |
| byte | 8 | (byte)0 | Byte |
| short | 16 | (short)0 | Short |
| int | 32 | 0 | Integer |
| long | 64 | 0L | Long |
| float | 32 | 0.0f | Float |
| double | 64 | 0.0d | Double |
| char | 16 | \u0000 | Character |
| boolean | 1 | false | Boolean |