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Constructing and Traversing an Array □ Accessing an Array □ A Complete Array Program □ Random Access □ Arrays and Methods □ The For-Each Loop



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Arrays Goals This chapter introduces the Java array for storing collections of many objects Individual elements are referenced with the Java subscript operator 



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In Java, indices must be numbered starting with 0, and nothing else score[0] of each indexed variable – Using the assignment operator will make two array g



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Operator [ ] is used to access array elements data[4] causes Java to throw the java util Class ArrayList java lang Object java util AbstractCollection



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Java arrays are objects This has several consequences Arrays are created using a form of the new operator No variable can ever hold an array; a variable can 



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Some basic array operations ○ Summing array elements: int sum = 0; // initialize before loop starts for (int item : x) // for each integer item in array sum += item;



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Java Programming: Program Design Including Data Structures 14 ◇ Loops used to step through elements in array and perform operations int[] list = new 

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