Starting Out With Java: Early Objects 5th Ed. Find the Error 1. int[] collection

Question

Starting Out With Java: Early Objects 5th Ed.

Find the Error
1. int[] collection = new int[-20];

2. int[] hours = 8, 12, 16;

3. int[] table = new int[10];
Scanner keyboard = new Scanner(System.in);
for (int x = 1; x <= 10; x++)
{
System.out.print("Enter the next value: ");
table[x] = keyboard.nextInt();
}

4. String[] names = { "George", "Susan" };
int totalLength = 0;
for (int i = 0; i < names.length(); i++)
totalLength += names[i].length;

5. String[] words = { "Hello", "Goodbye" };
System.out.println(words.toUpperCase())

Explanation / Answer

Ques 1. The size of the array can't be negative.

Ques 2. The array should be initialized within curly braces like

int[] hours = {8, 12, 16};

Ques 3. It will cause IndexOutOfBoundsException. The loop goes from 1 to 10.

When x becomes 10, error occurs.

Ques 4. The length of te array is calculated using

names.length

To get the String length, we use

totalLength += names[i].length();

Ques 5. The reference to the array is being used to call toUpperCase() function. The elements should be used to call the function

System.out.println(words[0].toUpperCase())

System.out.println(words[1].toUpperCase())

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