what will happen if a program uses an array index that is out of bounds in java code example

Example 1: java array out of bounds

//Use index inside the bounds of the array

Example 2: how to fix Index 2 out of bounds for length 2 when looping through an array in java

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for (int i = 0; i < a.length; i++) { // GOOD
  sum += a[i];
}