Today's three interviews demo[integer ASCII class relationship]

 

Catalog

1 

2

3

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1 

inti=0;

Integer j = newInteger(0);// because -127<0<128 So automatic unpacking j Unpacking is the basic type

System.out.println(i==j);

System.out.println(j.equals(i));

answer ：true  true

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2

ASCII   ASCI    contact

 standard ASCII Use only 7 individual bit

 In simplified Chinese Windows In the system ,ANSI Namely GB2312

ASCII Code is ANSI Subset of codes 

ASCII Codes are printable characters