数据类型小总结

1、基本数据类型

               整型   byte short int long

               浮点型：float double

               字符型：char

               布尔型：boolean  true false

            自动类型转换

                  byte short int long  float double

                       char

            强制类型转换：

                  double float long int short byt

                                        char

2、引用数据类型

                类

                接口

                数组

                封装类：byte   Byte

                        short  Short

                        int    Integer

                        long   Long

                        float  Float

                        double Double

                        char  Character

                                                boolean  Boolean