why does default value for char data type in java has 4 hex when it is a 16 bit datatype
I am new to java, and this question may be silly to many.
When going through the basics, i learnt this:
char: The char data type is a single 16-bit Unicode character. It has a minimum value of 'u0000' (or 0) and a maximum value of 'uffff' (or 65,535 inclusive).
My question is why does the default, minimum and maximum have 4 hex when it can be only one?
java
asked Nov 24 '18 at 0:24
user8506488user8506488
301
add a comment |
I am new to java, and this question may be silly to many.
When going through the basics, i learnt this:
char: The char data type is a single 16-bit Unicode character. It has a minimum value of 'u0000' (or 0) and a maximum value of 'uffff' (or 65,535 inclusive).
My question is why does the default, minimum and maximum have 4 hex when it can be only one?
java
asked Nov 24 '18 at 0:24
user8506488user8506488
301
2
Why do you think it can only be one?
– Max Vollmer
Nov 24 '18 at 0:27
@max I think OP means it can only have 1 value (at a time) but it seems to have 1 “u” and 4 “f” values.
– Bohemian♦
Nov 24 '18 at 0:29
Exactly what do you mean by “one value” and “4 hex”? Do you now about hex literals?
– Bohemian♦
Nov 24 '18 at 0:31
Thanks @bohemian , I completely missed the point , that one F is binary 1111 ( and exactly fits 4 bits). Super silly me :) :)
– user8506488
Nov 24 '18 at 18:12
add a comment |
I am new to java, and this question may be silly to many.
When going through the basics, i learnt this:
char: The char data type is a single 16-bit Unicode character. It has a minimum value of 'u0000' (or 0) and a maximum value of 'uffff' (or 65,535 inclusive).
My question is why does the default, minimum and maximum have 4 hex when it can be only one?
java
asked Nov 24 '18 at 0:24
user8506488user8506488
301
I am new to java, and this question may be silly to many.
When going through the basics, i learnt this:
char: The char data type is a single 16-bit Unicode character. It has a minimum value of 'u0000' (or 0) and a maximum value of 'uffff' (or 65,535 inclusive).
My question is why does the default, minimum and maximum have 4 hex when it can be only one?
java
java
asked Nov 24 '18 at 0:24
user8506488user8506488
301
asked Nov 24 '18 at 0:24
user8506488user8506488
301
asked Nov 24 '18 at 0:24
user8506488user8506488
301
asked Nov 24 '18 at 0:24
user8506488user8506488
301
asked Nov 24 '18 at 0:24
user8506488user8506488
301
301
2
Why do you think it can only be one?
– Max Vollmer
Nov 24 '18 at 0:27
@max I think OP means it can only have 1 value (at a time) but it seems to have 1 “u” and 4 “f” values.
– Bohemian♦
Nov 24 '18 at 0:29
Exactly what do you mean by “one value” and “4 hex”? Do you now about hex literals?
– Bohemian♦
Nov 24 '18 at 0:31
Thanks @bohemian , I completely missed the point , that one F is binary 1111 ( and exactly fits 4 bits). Super silly me :) :)
– user8506488
Nov 24 '18 at 18:12
add a comment |
2
Why do you think it can only be one?
– Max Vollmer
Nov 24 '18 at 0:27
@max I think OP means it can only have 1 value (at a time) but it seems to have 1 “u” and 4 “f” values.
– Bohemian♦
Nov 24 '18 at 0:29
Exactly what do you mean by “one value” and “4 hex”? Do you now about hex literals?
– Bohemian♦
Nov 24 '18 at 0:31
Thanks @bohemian , I completely missed the point , that one F is binary 1111 ( and exactly fits 4 bits). Super silly me :) :)
– user8506488
Nov 24 '18 at 18:12
2
2
Why do you think it can only be one?
– Max Vollmer
Nov 24 '18 at 0:27
Why do you think it can only be one?
– Max Vollmer
Nov 24 '18 at 0:27
@max I think OP means it can only have 1 value (at a time) but it seems to have 1 “u” and 4 “f” values.
– Bohemian♦
Nov 24 '18 at 0:29
@max I think OP means it can only have 1 value (at a time) but it seems to have 1 “u” and 4 “f” values.
– Bohemian♦
Nov 24 '18 at 0:29
Exactly what do you mean by “one value” and “4 hex”? Do you now about hex literals?
– Bohemian♦
Nov 24 '18 at 0:31
Exactly what do you mean by “one value” and “4 hex”? Do you now about hex literals?
– Bohemian♦
Nov 24 '18 at 0:31
Thanks @bohemian , I completely missed the point , that one F is binary 1111 ( and exactly fits 4 bits). Super silly me :) :)
– user8506488
Nov 24 '18 at 18:12
Thanks @bohemian , I completely missed the point , that one F is binary 1111 ( and exactly fits 4 bits). Super silly me :) :)
– user8506488
Nov 24 '18 at 18:12
add a comment |
2 Answers
2
active
oldest
votes
I think you need to read up on numeral systems.
Binary: Represents numbers using 2 digits, 0 and 1.
Decimal: Represents numbers using 10 digits, 0 - 9.
Hexadecimal: Represents numbers using 16 digits, 0 - F.
A char in Java is a type that can hold numbers with 16 bits, i.e. in the range 0 - 1111111111111111 in binary, 0 - 65535 in decimal or 0 - FFFF in hexadecimal.
answered Nov 24 '18 at 0:31
Max VollmerMax Vollmer
5,75651837
Thanks @max , I completely missed the point , that that one F is binary 1111 ( and exactly fits 4 bits)
– user8506488
Nov 24 '18 at 18:11
add a comment |
Hex F is decimal 15 or binary 1111. It fits exactly in 4 bits. a 16-bit value can hold 4 times 4 bits, hence from 0x0000 to 0xFFFF (which is 2^16 = 65,536).
The u in your example is for Unicode, pretty much saying that you can store unicode characters that take up to 16 bits, from u0000 to uFFFF.
answered Nov 24 '18 at 0:30
RobertRobert
2,15962536
Thanks @robert , now I get it perfectly, I had completely overlooked the fact that one F is binary 1111 (and fits exactly 4 bits) . The question was super silly to have been asked in a forum :) :). Thanks anyway
– user8506488
Nov 24 '18 at 18:07
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
I think you need to read up on numeral systems.
Binary: Represents numbers using 2 digits, 0 and 1.
Decimal: Represents numbers using 10 digits, 0 - 9.
Hexadecimal: Represents numbers using 16 digits, 0 - F.
A char in Java is a type that can hold numbers with 16 bits, i.e. in the range 0 - 1111111111111111 in binary, 0 - 65535 in decimal or 0 - FFFF in hexadecimal.
answered Nov 24 '18 at 0:31
Max VollmerMax Vollmer
5,75651837
Thanks @max , I completely missed the point , that that one F is binary 1111 ( and exactly fits 4 bits)
– user8506488
Nov 24 '18 at 18:11
add a comment |
I think you need to read up on numeral systems.
Binary: Represents numbers using 2 digits, 0 and 1.
Decimal: Represents numbers using 10 digits, 0 - 9.
Hexadecimal: Represents numbers using 16 digits, 0 - F.
A char in Java is a type that can hold numbers with 16 bits, i.e. in the range 0 - 1111111111111111 in binary, 0 - 65535 in decimal or 0 - FFFF in hexadecimal.
answered Nov 24 '18 at 0:31
Max VollmerMax Vollmer
5,75651837
Thanks @max , I completely missed the point , that that one F is binary 1111 ( and exactly fits 4 bits)
– user8506488
Nov 24 '18 at 18:11
add a comment |
I think you need to read up on numeral systems.
Binary: Represents numbers using 2 digits, 0 and 1.
Decimal: Represents numbers using 10 digits, 0 - 9.
Hexadecimal: Represents numbers using 16 digits, 0 - F.
A char in Java is a type that can hold numbers with 16 bits, i.e. in the range 0 - 1111111111111111 in binary, 0 - 65535 in decimal or 0 - FFFF in hexadecimal.
answered Nov 24 '18 at 0:31
Max VollmerMax Vollmer
5,75651837
I think you need to read up on numeral systems.
Binary: Represents numbers using 2 digits, 0 and 1.
Decimal: Represents numbers using 10 digits, 0 - 9.
Hexadecimal: Represents numbers using 16 digits, 0 - F.
A char in Java is a type that can hold numbers with 16 bits, i.e. in the range 0 - 1111111111111111 in binary, 0 - 65535 in decimal or 0 - FFFF in hexadecimal.
answered Nov 24 '18 at 0:31
Max VollmerMax Vollmer
5,75651837
answered Nov 24 '18 at 0:31
Max VollmerMax Vollmer
5,75651837
answered Nov 24 '18 at 0:31
Max VollmerMax Vollmer
5,75651837
answered Nov 24 '18 at 0:31
Max VollmerMax Vollmer
5,75651837
5,75651837
Thanks @max , I completely missed the point , that that one F is binary 1111 ( and exactly fits 4 bits)
– user8506488
Nov 24 '18 at 18:11
add a comment |
Thanks @max , I completely missed the point , that that one F is binary 1111 ( and exactly fits 4 bits)
– user8506488
Nov 24 '18 at 18:11
Thanks @max , I completely missed the point , that that one F is binary 1111 ( and exactly fits 4 bits)
– user8506488
Nov 24 '18 at 18:11
Thanks @max , I completely missed the point , that that one F is binary 1111 ( and exactly fits 4 bits)
– user8506488
Nov 24 '18 at 18:11
add a comment |
Hex F is decimal 15 or binary 1111. It fits exactly in 4 bits. a 16-bit value can hold 4 times 4 bits, hence from 0x0000 to 0xFFFF (which is 2^16 = 65,536).
The u in your example is for Unicode, pretty much saying that you can store unicode characters that take up to 16 bits, from u0000 to uFFFF.
answered Nov 24 '18 at 0:30
RobertRobert
2,15962536
Thanks @robert , now I get it perfectly, I had completely overlooked the fact that one F is binary 1111 (and fits exactly 4 bits) . The question was super silly to have been asked in a forum :) :). Thanks anyway
– user8506488
Nov 24 '18 at 18:07
add a comment |
Hex F is decimal 15 or binary 1111. It fits exactly in 4 bits. a 16-bit value can hold 4 times 4 bits, hence from 0x0000 to 0xFFFF (which is 2^16 = 65,536).
The u in your example is for Unicode, pretty much saying that you can store unicode characters that take up to 16 bits, from u0000 to uFFFF.
answered Nov 24 '18 at 0:30
RobertRobert
2,15962536
Thanks @robert , now I get it perfectly, I had completely overlooked the fact that one F is binary 1111 (and fits exactly 4 bits) . The question was super silly to have been asked in a forum :) :). Thanks anyway
– user8506488
Nov 24 '18 at 18:07
add a comment |
Hex F is decimal 15 or binary 1111. It fits exactly in 4 bits. a 16-bit value can hold 4 times 4 bits, hence from 0x0000 to 0xFFFF (which is 2^16 = 65,536).
The u in your example is for Unicode, pretty much saying that you can store unicode characters that take up to 16 bits, from u0000 to uFFFF.
answered Nov 24 '18 at 0:30
RobertRobert
2,15962536
Hex F is decimal 15 or binary 1111. It fits exactly in 4 bits. a 16-bit value can hold 4 times 4 bits, hence from 0x0000 to 0xFFFF (which is 2^16 = 65,536).
The u in your example is for Unicode, pretty much saying that you can store unicode characters that take up to 16 bits, from u0000 to uFFFF.
answered Nov 24 '18 at 0:30
RobertRobert
2,15962536
answered Nov 24 '18 at 0:30
RobertRobert
2,15962536
answered Nov 24 '18 at 0:30
RobertRobert
2,15962536
answered Nov 24 '18 at 0:30
RobertRobert
2,15962536
2,15962536
Thanks @robert , now I get it perfectly, I had completely overlooked the fact that one F is binary 1111 (and fits exactly 4 bits) . The question was super silly to have been asked in a forum :) :). Thanks anyway
– user8506488
Nov 24 '18 at 18:07
add a comment |
Thanks @robert , now I get it perfectly, I had completely overlooked the fact that one F is binary 1111 (and fits exactly 4 bits) . The question was super silly to have been asked in a forum :) :). Thanks anyway
– user8506488
Nov 24 '18 at 18:07
Thanks @robert , now I get it perfectly, I had completely overlooked the fact that one F is binary 1111 (and fits exactly 4 bits) . The question was super silly to have been asked in a forum :) :). Thanks anyway
– user8506488
Nov 24 '18 at 18:07
Thanks @robert , now I get it perfectly, I had completely overlooked the fact that one F is binary 1111 (and fits exactly 4 bits) . The question was super silly to have been asked in a forum :) :). Thanks anyway
– user8506488
Nov 24 '18 at 18:07
add a comment |
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2
Why do you think it can only be one?
– Max Vollmer
Nov 24 '18 at 0:27
@max I think OP means it can only have 1 value (at a time) but it seems to have 1 “u” and 4 “f” values.
– Bohemian♦
Nov 24 '18 at 0:29
Exactly what do you mean by “one value” and “4 hex”? Do you now about hex literals?
– Bohemian♦
Nov 24 '18 at 0:31
Thanks @bohemian , I completely missed the point , that one F is binary 1111 ( and exactly fits 4 bits). Super silly me :) :)
– user8506488
Nov 24 '18 at 18:12