Assigning values of an array in a for loop java

Question

Im still starting out in java - and any guidance would be great on this. I'm basically hoping to create an array, then assign values to that array in a for loop. The code I have at the moment is:

int i;
int[] testarray = new int[50];

for (i = 0; i <=50; i++) {  
testarray[i]=i;
}

All i wanna do is make an array with each entry the number of the iteration (using this method) I know its really simple, but I feel as if I have missed something important during learning the basics! Thanks!

Answer 1

Everything is fine except the stop condition:

for (i = 0; i < 50; i++) {  

Since your array is of size 50, and indices start at 0, the last index is 49.

You should reduce the scope of i, avoid hard-coding the length everywhere (don't repeat yourself principle), and respect the camelCase naming conventions:

int[] testArray = new int[50];

for (int i = 0; i < testArray.length; i++) {  
    testArray[i]=i;
}