char a = 'h';
//类包装器
Character aobj = a ;//自动装箱
byte b = 6;
Byte bobj = b;
short s = 234;
Short sobj = s;
boolean b = true;
Boolean bobj = b;
int i = 100;
Integer iobj = i;
long l = 567L;
Long lobj = l;
float f = 8.99F;
Float fobj = f;
double d = 4.7788;
Double dobj = d;
int aa = a + i;