OBJECT ORIENTED PROGRAMMING CIS 3100

Creating initializing and accessing an array one way

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Creating, Initializing, and Accessing an Array One way to create an array is with the new operator. The next statement in the ArrayDemo program allocates an array with enough memory for ten integer elements and assigns the array to the anArray variable. // create an array of integers anArray = new int[10]; If this statement were missing, the compiler would print an error like the following, and compilation would fail: ArrayDemo.java:4: Variable anArray may not have been initialized. The next few lines assign values to each element of the array: anArray[0] = 100; // initialize first element anArray[1] = 200; // initialize second element anArray[2] = 300; // etc. Each array element is accessed by its numerical index: System.out.println("Element 1 at index 0: " + anArray[0]); System.out.println("Element 2 at index 1: " + anArray[1]);
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System.out.println("Element 3 at index 2: " + anArray[2]); Alternatively, you can use the shortcut syntax to create and initialize an array: int[] anArray = { 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000 }; Here the length of the array is determined by the number of values provided between { and }
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