I would like to create a 2D array but get the row and column value from an integer, example;
Integer Col = 8;
Integer Row = 200;
String[][] list;
list = new String [Row][Col];
Of course, this is not compling. Im getting a Type mismatch: cannot convert from int to String error but I am not trying to convert an int to a String, I just want the Integer value to set the array length.
Are you sure your environment setup is correct? Because your code looks good, see here .
public class Main {
public static void main( String args[] ) {
Integer Col = 8;
Integer Row = 200;
String[][] list;
list = new String[Row][Col];
System.out.println( list.length );
}
}
I just renamed the class and added a print statement to show something useful, nothing more :)
The reason why you are getting the "cannot convert from int to String error" is because you are storing an 27(integer) to list(which is a string datatype). list[5][100] = 27. For storing an integer into a string datatype, you have to explicitly convert the integer to string using String.valueOf() or Integer.toString --
public class Beta1 {
public static void main(String[] args) {
Integer Col = 200;
Integer Row = 8;
int i = 0;
String[][] list;
list = new String [Row][Col];
list[5][100] = String.valueOf(27);
System.out.println(list[5][100]);
}
}
