Java software solutions foundations of program design 4th edition phần 7 docx

... few. summary of key concepts 10.0 software development models 571 the program is being maintained. When the changes are serious or numerous enough, a new version of the program is released for use. A program ... the maintenance tasks, and often the responsibilities of personnel change. Therefore, maintainers often do not understand the software as well as Maintaining softwar...

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... process of creating programs using Java. This section dis- cusses the purpose of programming in general and introduces the Java program- ming language. problem solving The purpose of writing a program ... broad range of com- puting issues, laying the founda- tion for the study of software development. ◗ Describe the relationship between hardware and software. ◗ Define va...

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... Some packages in the Java standard class library Package Provides support to java. applet java. awt java. beans java. io java. lang java. math java. net java. rmi java. security Create programs (applets) ... library is a group of packages that support common program- ming tasks. 2.18 The String class is part of the java. lang package, which is auto- matically imported into...

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... with Account objects. Such programs are often called driver programs because all they do is drive the use of other, more interesting parts of our program. They are often used for testing purposes. The ... fundamental programming 4 writing classes 186 CHAPTER 3 program statements listing 3. 17 //******************************************************************** // ExamGrades .java...

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... package (javax.swing) of the Java class library contains a class called JOptionPane that simplifies the creation and use of basic dialog boxes. Figure 5 .7 lists some of the methods of JOptionPane. The ... 333 999 222 333 999 STEP 5 STEP 6 f3 = new Num (77 7); After returning from changeValues a1 a2 f1 f2 f1 f2f3 f3 a1 a2a3 a3 111 111 888 333888 333 999 77 7 = Undefined 318 CHAPTE...

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... Listing 7. 14 represents a generic type of food. The constructor of FoodItem accepts the number of grams of fat and the number of servings of that food. The calories method returns the number of calories due ... every class in every Java program. key concept 7. 4 polymorphism 411 The Staff class shown in Listing 7. 17 maintains an array of objects that rep- resent indi...

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... TestData program is run might look like this: 85 90 93 15 82 79 52 71 70 98 74 57 41 66 22 16 67 65 24 84 86 61 91 79 18 81 64 41 68 81 98 47 28 40 69 10 85 82 64 41 23 61 27 10 59 89 88 26 24 76 Output ... HEIGHT)); } 33 89 73 36 54 91 42 73 95 58 19 41 18 14 63 80 96 30 17 28 24 37 40 64 94 23 98 10 78 50 89 28 64 54 59 23 61 15 80 88 51 28 44 48 73 21 41 52 35 38 8.4 obj...

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... and structure of a Java software system. Part of the Java Development Kit. javah—A software tool that generates C header and source files, used for implementing native methods. Part of the Java Development ... in the range. software (1) Programs and data. (2) The intangible components of a computer system. software component—See component. Software Development Kit (SD...

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... the result of this BigDecimal multiplied with the value of arg. The scale of the resulting Big- Decimal is the result of the addition of the two BigDecimal’s scales. 76 6 APPENDIX M the java class ... class. APPENDIX M the java class library 77 3 public BigInteger gcd(BigInteger arg) Returns the greatest common denominator of the absolute value of this BigInteger and the a...

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... natural base of logarithms (2 .71 82818284590452354) and the ratio of the circumference of a circle to its diameter (3.14159265358 979 323846). 858 APPENDIX M the java class library JTextArea (javax.swing) A ... instance of a GridLayout with a dimension of r rows and c columns (default of 1 by any). public GridLayout(int r, int c, int hg, int vg) Creates a new instance of a Gr...

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