I am not able to assign a String variable to a String Array. My code is :
//Declaring a String array
public String [] fileWrite = new String [10];
//assigning a variable
String value = String.valueOf(aChar1);
fileWrite[0] = value;
But when I try to print the array, it gives null
. I checked the value of variable value but that is ok. I cant understand the reason of array being null
.
Firstly, you need to know that "printing an array" in java is somewhat "broken": You need to use Arrays.toString(array)
to print an array (you can't rely on array.toString()
- it isn't useful).
Try this code:
public static void main(String[] args) {
String[] fileWrite = new String[10];
char aChar1 = 'x';
String value = String.valueOf(aChar1);
fileWrite[0] = value;
System.out.println(Arrays.toString(fileWrite));
}
Output:
[x, null, null, null, null, null, null, null, null, null]
public String[] fileWrite = new String[10];
fileWrite[0] = aChar1 + "";
Try this
The assign is correct. Maybe the variable aChar1 is null or the string "null"
To assign a variable to an array try
String[] fileWrite = new String[10];
Arrays.fill(fileWrite, aChar1);
System.out.println(Arrays.toString(fileWrite));
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