Java基础部类
Java基础类型
| 数据类型 | 默认值 | 所占字节 | 封装类(都在java.lang包下) |
| byte | (byte)0 | 1 | Byte |
| short | (short)0 | 2 | Short |
| int | 0 | 4 | Integer |
| long | 0L | 8 | Long |
| float | 0.0f | 4 | Float |
| double | 0.0d | 8 | Double |
| char | \u0000 | 2 | Character |
| boolean | false | 1/8 | Boolean |
注意：整型变量的类型有byte、short、int、long四种。