By Walter Savitch
Nice booklet. Im now not new to programming in any experience of the notice, yet i'm new to java and to item orientated programming usually. I do favor occasion pushed programming yet this ebook definately does stable in explaining the belief at the back of OOP. The booklet is a smart begginer publication and describes what's goin on within the historical past to provide someone a greater realizing of programming. For an individual new to Java, Like myself, I instructed this e-book.
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Extra info for Absolute Java with Student Resource Disk
Quotient = 2 remainder = 1 20. fm Page 54 Saturday, March 19, 2005 8:20 AM 54 CHAPTER 1 Getting Started 21. a. 0 b. 9/5 has int value 1; because the numerator and denominator are both of type int, integer division is done; the fractional part is discarded. The programmer probably wanted floating-point division, which does not discard the part after the decimal point. c. 0; 22. n == 3 23. n == 4 n == 3 24. Timeis money 25. 7 b 26. defg 27. abc def 28. abc\ndef 29. HELLO TONY 30. The output is 2 + 2 = 4 2 + 2 = 22 In the expression "2 + 2 = " + (2 + 2) the integers 2 and 2 in (2 + 2) are added to obtain the integer 4.
Let’s explain this first sample format specifier. 2f says to output a floating-point number in a field (number of spaces) of width 6 (room for six characters) and to show exactly two digits after the decimal point. 80" in a field of width 6. 80". Any extra blank space is added to the front (left-hand end) of the value output. 2f. The f means the output is a floating-point number, that is, a number with a decimal point. 2f) follows. Before we go on, let’s note a few details about the method printf.
The equal sign, =, is used as the assignment operator in Java. An assignment statement is an instruction to change the value of a variable. Each variable should be initialized before the program uses its value. Parentheses in arithmetic expressions indicate which arguments are given to an operator. When parentheses are omitted, Java adds implicit parentheses using precedence rules and associativity rules. You can have variables and constants of type String. String is a class type, not a primitive type.