Java Programming - Language Fundamentals - Discussion
Discussion Forum : Language Fundamentals - General Questions (Q.No. 3)
3.
Which will legally declare, construct, and initialize an array?
Answer: Option
Explanation:
The only legal array declaration and assignment statement is Option D
Option A is wrong because it initializes an int array with String literals.
Option B is wrong because it use something other than curly braces for the initialization.
Option C is wrong because it provides initial values for only one dimension, although the declared array is a two-dimensional array.
Discussion:
18 comments Page 2 of 2.
Sagar Gaikwad said:
1 decade ago
Answer D is correct.
Because the declaration of 1d array for compile time is,
Datatype array_name[]={values};
Hence D is correct.
Because the declaration of 1d array for compile time is,
Datatype array_name[]={values};
Hence D is correct.
Krishna said:
1 decade ago
Other type of array initialize:
int a[]= new int[10];
a[0]=6;
a[1]=8;
a[2]=4;
in this array what is capacity and size?
Capacity is : 10 (nothing but length of array)
size is : 3(filled memory locations)
int a[]= new int[10];
a[0]=6;
a[1]=8;
a[2]=4;
in this array what is capacity and size?
Capacity is : 10 (nothing but length of array)
size is : 3(filled memory locations)
Cosmicguypradeep said:
1 decade ago
2-d array initialization
int MyList[][] = {{1,2,3},{4,5,6},{7,8,9}};
Which means a[i][j]
Rows and columns
1 2 3
4 5 6
7 8 9
The same can be declared as 1-d arrays as
int MyList[]= {1,2,3};
Only one row
1 2 3
int MyList[][] = {{1,2,3},{4,5,6},{7,8,9}};
Which means a[i][j]
Rows and columns
1 2 3
4 5 6
7 8 9
The same can be declared as 1-d arrays as
int MyList[]= {1,2,3};
Only one row
1 2 3
Vikasku652 said:
1 decade ago
How to initialize a 2 dimensional array ?
Abhishek bhardwaj said:
1 decade ago
Answer b is wrong because of absence of curly braces in array element declaration.
Shah reza said:
1 decade ago
Its answer is D means oneDimensionalArray because the declaration of oneDimensionalArray is type var-name[];
and in D it is clear that int myList[], where int is the type of data and myList is array variable.
in case of C, twoDArray but value provided are only oneDArray.
and in D it is clear that int myList[], where int is the type of data and myList is array variable.
in case of C, twoDArray but value provided are only oneDArray.
Disha said:
1 decade ago
No it means that the array has both rows and columns while in 1d arrays, we have only rows. So, it represent 3 elements in 1 row.
Malarvizhi.v said:
1 decade ago
How you said {4,3,7} is one dimensions array?
One dimensions array meants only one value will be declare but you repersend 3 values how?
One dimensions array meants only one value will be declare but you repersend 3 values how?
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