在java中为long数据类型赋值 - 默认为int

Question

long val = 5000000000;

The error during this assignment is:

The literal 5000000000 of type int is out of range

Why does the compiler by default assume the literal to be type int when it is declared with type long ?

Answer 1

You can use:

long val = 5000000000L;

Check it here

Answer 2

There is aspecific suffixes for long ie L . If there is no suffix, then 5000000000 assumed to be an int type. And 5000000000 is out of int range, causing the erro. So you need to add L at the end of 5000000000 for it to be treated as a long value. Change your declaration from

long val = 5000000000;

to

long val = 5000000000L;

Answer 3

Add the letter L at the end of your number as shown below

long val = 5000000000L;

Answer 4

long: The long data type is a 64-bit signed two's complement integer. It has a minimum value of -9,223,372,036,854,775,808 and a maximum value of 9,223,372,036,854,775,807 (inclusive).

You should append 'l' or 'L' to the value explicitly used to initialize the variable; even as small as 0.

 long val = 0L;