In c# I can write below code;
object[] params = new object[4] { "a", 10, "c", true};
What is the Java notation of above code?
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1Why you want to do this? why array of objects intead of array of strings? I dont think this is efficient approach.Simon Dorociak– Simon Dorociak2013-07-31 07:31:12 +00:00Commented Jul 31, 2013 at 7:31
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1what do you really want to know...Malav– Malav2013-07-31 07:44:42 +00:00Commented Jul 31, 2013 at 7:44
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7 Answers
Object[] param = new Object[]{ obj0, obj1, obj2, ..., objX };
or
Object[] param = { obj0, obj1, obj2, ..., objX};
or
Object[] param = new Object[X+1];
param[0] = obj0 ;
...
param[X] = objX ;
1 Comment
Prasad Kharkar
I corrected your index value because if x is 5, then maximum aray index should be 5-1 = 4 . Hope you don't mind
You can do
Object[] array = new Object[]{ "a","b"};
- Note that you do not have to specify the size of array while using this syntax
- The array is filled up with values in the same statement.
OR
Object[] array2 = new Object[2];
If you do this, then polulate array using
array2[0] = "a";
array2[1] = "b";
You can also create anonymous array, which is can be used to pass to a method which takes array argument e.g.
public void methodTakingArray(Object[] array){
// perform operations using `array` variable.
}
and you call the method as methodTakingArray(new Object[]{"a","b"}); so that it can be accessed in the method using array local variable.
Comments
Object[] params = {"a","b"}
or
Object[] params = new Object[8];
params[0] = "a";...
Comments
Object[] params = new Object[] { "a", "b", "c", "d", "e", "f" , "g", "h" };
Check the difference:
Object instead of object
No [8] : you cannot define dimension if you are initializing the array.
Comments
Simple,
Object []params=new Object[]{"a", "b", "c", "d", "e", "f" , "g", "h"};
You can declare any array like this, using the syntax
Type [] var_name=new Type[]{/*Values seperated by commas*/x, y, z};
Comments
object[] params = new object[8] { "a", "b", "c", "d", "e", "f" , "g", "h" }; // 8 is no need here
define array as follows
object[] params = new object[] { "a", "b", "c", "d", "e", "f" , "g", "h" };
Follow this to learn more about Arrays in java.
answered Jul 31, 2013 at 7:48
Ruchira Gayan Ranaweera
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Comments
Very Simple!
As you have started learning Java, I hope you have learned the syntax of Array creation. Array creation in Java is a two step process, unlike C/C++.
Since you have worked in C#, it would be easy for you to learn too:
Syntax:
Array_type Array_name[];
Array_name = new Array_type[Array_size];
So, your solution is:
Object param[];
param = new Object[8];
param[0]='a';
param[1]='b';
and so on..
Ofcourse you can combine these two steps into one, by writing:
Object param[]={'a','b','c','d','e','f','g','h'};
I hope that helped!
