Java data type + operator + control flow

1: Decimal, octal (starting with 0, except 0), Hex (starting with 0x or 0X) 2:

Data type	Memory space (8 bits 1 bytes)	Range of values
Byte	8 Guests	-128~127
Short	16 Guests	-32768~32767
Int	32 Guests	-2^31~2^31-1
Long	64 guests	-2^63~2^63-1, suffix +l/l
Float	32 Guests	With a decimal part, suffix +f/f
Double	64 guests	With a small number of parts, can be +d/d
Char	16 Guests	' Single quote '--unicode table code: One by one corresponds to |0X0000~0XFFFF value

3: ' Escape character \+ ... '--single quote--can represent characters or other watchmaking meanings 4:boolean:true/ False-----------------------------------implicit conversion int-long-float-double display conversion (type) _____________________________________ _5: operator

Operator	Binding nature
[ ] . () (Method call)	From left to right
! ~ + +--+ (unary operation)-(unary operation)	From right to left
* / %	From left to right
+ -	From left to right
<< >> >>> (unsigned Right shift)	From left to right
< <= > >= instanceof Comparison	From left to right
==           !=	From left to right
&	From left to right
^	From left to right
|	From left to right
&&	From left to right
||	From left to right
? True:false	From right to left
= + = = *=/=%= &= |= ^= <<= >>= >>=	From right to left

6: Control Flow if () {--------}else if () {-------}else{--------}switch () {case A:-----; Break;default:--------;} while () {-----};d o{----}while (), for (a;b;c) {---------}

Java data type + operator + control flow