The array will be created large enough to hold the number of elements. And there is no need to use new.
public class Main {
public static void main(String args[]) {
int days[] = {31, 28, 31,};
System.out.println("days[2] is " + days[2]);
}
}
The output:
days[2] is 31If you try to reference elements with negative numbers or numbers greater than the array length, you will get a run-time error.
public class Main {
public static void main(String args[]) {
int days[] = {31, 28, 31,};
System.out.println("days[2] is " + days[10]);
}
}
It generates the following error.
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 10
at Main.main(Main.java:5)The following code uses a one-dimensional array to find the average of a set of numbers.
public class Main {
public static void main(String args[]) {
double nums[] = {10.1, 11.2, 12.3, 13.4, 14.5};
double result = 0;
int i;
for (i = 0; i < 5; i++)
result = result + nums[i];
System.out.println("Average is " + result / 5);
}
}
The output:
Average is 12.299999999999999| java2s.com | Contact Us | Privacy Policy |
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