9781111530532 ppt ch07_passing_primitivetypeasobjects

Java Programming: From Problem Analysis to Program Design, 5e

Chapter 7Passing Primitive Types as Objects

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• Java provides the classes Integer, Double, Character, Long, and Float so that the values of the primitive data types can be treated as objects

• These classes have limitations

• You can create objects of the type, say Integer, to store int values, but you cannot change the values stored in the objects

• You can create objects of type IntClass and/or change the values of the objects

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Sample Run: In this sample run, the user input is shadedLine 1: Based on the course score, this program computes the course grade.Line 5: Enter the course score: 90.50Line 9: The course score is 90.5Line 10: Your grade for the course is A

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num1 = 10; //Line 5

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num1 = 10; //Line 5num2.setNum(15); //Line 6ch = 'A'; //Line 7str = new StringBuffer("Sunny"); //Line 8

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num = b.getNum(); //Line 14

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