an Array question# Java - 爪哇娇娃
P*y
1 楼
Why can't I do the following:
int [] myArray;
myArray = {1, 2};
Thanks
int [] myArray;
myArray = {1, 2};
Thanks
o*v
2 楼
int[] myArray = new int[2];
myArray[0]=1
myArray[1]=2
【在 P****y 的大作中提到】
: Why can't I do the following:
: int [] myArray;
: myArray = {1, 2};
: Thanks
myArray[0]=1
myArray[1]=2
【在 P****y 的大作中提到】
: Why can't I do the following:
: int [] myArray;
: myArray = {1, 2};
: Thanks
P*y
3 楼
thank you, ooev. I just do not understand why it is illegal to
do it on my way.
【在 o**v 的大作中提到】
: int[] myArray = new int[2];
: myArray[0]=1
: myArray[1]=2
do it on my way.
【在 o**v 的大作中提到】
: int[] myArray = new int[2];
: myArray[0]=1
: myArray[1]=2
o*v
4 楼
or
int[] myArray = {1, 2};
【在 P****y 的大作中提到】
: Why can't I do the following:
: int [] myArray;
: myArray = {1, 2};
: Thanks
int[] myArray = {1, 2};
【在 P****y 的大作中提到】
: Why can't I do the following:
: int [] myArray;
: myArray = {1, 2};
: Thanks
c*y
5 楼
You need to specify how much memory to allocate to the array when defining it.
【在 P****y 的大作中提到】
: thank you, ooev. I just do not understand why it is illegal to
: do it on my way.
【在 P****y 的大作中提到】
: thank you, ooev. I just do not understand why it is illegal to
: do it on my way.
m*t
6 楼
I'm too lazy to test it now, but I think you want to do:
int[] myArray = new int[]{1, 2};
【在 o**v 的大作中提到】
: or
: int[] myArray = {1, 2};
int[] myArray = new int[]{1, 2};
【在 o**v 的大作中提到】
: or
: int[] myArray = {1, 2};
o*v
7 楼
i tested b4 i posted. 【 在 magicfat (魔法胖子) 的大作中提到: 】
m*t
8 楼
you are right, looks like if you want to assign it in the declaration
you can do either
int[] myArray = new int[]{1, 2};
or simply
int[] myArray = {1, 2};
But if it's in an assignment, you can't omit "new int[]".
【在 o**v 的大作中提到】
: i tested b4 i posted. 【 在 magicfat (魔法胖子) 的大作中提到: 】
you can do either
int[] myArray = new int[]{1, 2};
or simply
int[] myArray = {1, 2};
But if it's in an assignment, you can't omit "new int[]".
【在 o**v 的大作中提到】
: i tested b4 i posted. 【 在 magicfat (魔法胖子) 的大作中提到: 】
c*g
9 楼
Java array is an object, to create an object, you need to
1) declare
2) initialize (use new to assign a size).
So you can say:
int[] myArray;
myArray = new int[4];
But one of many special things about an array is, you can also
initialize its members, either in an explicitive (such as a loop),
or an implicitvie way. like:
int[] myArray;
myArray = new int[] {1, 2};
you can do this in one line: int[] myArray = new int[] {1, 2};
ALSO, there is a shortcut for the above one line initi
【在 P****y 的大作中提到】
: Why can't I do the following:
: int [] myArray;
: myArray = {1, 2};
: Thanks
1) declare
2) initialize (use new to assign a size).
So you can say:
int[] myArray;
myArray = new int[4];
But one of many special things about an array is, you can also
initialize its members, either in an explicitive (such as a loop),
or an implicitvie way. like:
int[] myArray;
myArray = new int[] {1, 2};
you can do this in one line: int[] myArray = new int[] {1, 2};
ALSO, there is a shortcut for the above one line initi
【在 P****y 的大作中提到】
: Why can't I do the following:
: int [] myArray;
: myArray = {1, 2};
: Thanks
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