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Murach’s Java Programming, C2 
© 2011, Mike Murach & Associates, Inc. 
Slide 
11 
Statements that increment a counter variable 
int invoiceCount = 0; 
invoiceCount = invoiceCount + 1;      // invoiceCount = 1 
invoiceCount = invoiceCount + 1;      // invoiceCount = 2 
Statements that add amounts to a total 
double invoiceAmount1 = 150.25; 
double invoiceAmount2 = 100.75; 
double invoiceTotal = 0.0; 
invoiceTotal = invoiceTotal + invoiceAmount1; 
// invoiceTotal = 150.25 
invoiceTotal = invoiceTotal + invoiceAmount2; 
// invoiceTotal = 251.00 
Statements that mix int and double variables 
int result9 = invoiceTotal / invoiceCount 
// result9 = 125 
double result10 = invoiceTotal / invoiceCount 
// result10 = 125.50 
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Murach’s Java Programming, C2 
© 2011, Mike Murach & Associates, Inc. 
Slide 
12 
The syntax for declaring and initializing a string 
variable 
String variableName = value; 
; 
Statements that declare and initialize a string 
String message1 = "Invalid data entry."; 
String message2 = ""; 
String message3 = null; 
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Murach’s Java Programming, C2 
© 2011, Mike Murach & Associates, Inc. 
Slide 
13 
How to join strings 
String firstName = "Bob";            // firstName is Bob 
String lastName = "Smith";           // lastName is Smith 
String name = firstName + " " + lastName; 
// name is Bob Smith 
How to join a string and a number 
double price = 14.95; 
String priceString = "Price: " + price; 
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Murach’s Java Programming, C2 
© 2011, Mike Murach & Associates, Inc. 
Slide 
14 
How to append one string to another with the + 
operator 
firstName = "Bob";     // firstName is Bob 
lastName = "Smith";    // lastName is Smith 
name = firstName + " "; 
// name is Bob followed by a space 
name = name + lastName; 
// name is Bob Smith 
How to append one string to another with the += 
operator 
firstName = "Bob";     // firstName is Bob 
lastName = "Smith";    // lastName is Smith 
name = firstName + " "; 
// name is Bob followed by a space 
name += lastName;      // name is Bob Smith 
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Murach’s Java Programming, C2 
© 2011, Mike Murach & Associates, Inc. 
Slide 
15 
Common escape sequences 
\n 
\t 
\r 
\" 
\\ 
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Murach’s Java Programming, C2 
© 2011, Mike Murach & Associates, Inc. 
Slide 
16 
A string with a new line 
String 
"Code: JSPS\nPrice: $49.50" 
Result 
Code: JSPS 
Price: $49.50 
A string with tabs and returns 
String 
"Joe\tSmith\rKate\tLewis" 
is" 
Result 
Joe      Smith 
Kate     Lewis 
VB.NET TIFF: Add New Image to TIFF File in Visual Basic .NET
However, RasterEdge VB.NET TIFF document processing SDK can offer you the reliable and extensive TIFF page image adding tool that allows you to directly insert
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Murach’s Java Programming, C2 
© 2011, Mike Murach & Associates, Inc. 
Slide 
17 
A string with quotation marks 
String 
"Type \"x\" to exit" 
Result 
Type "x" to exit 
A string with a backslash 
String 
"C:\\java\\files" 
es" 
Result 
C:\java\files 
es 
Murach’s Java Programming, C2 
© 2011, Mike Murach & Associates, Inc. 
Slide 
18 
How to create an object from a class 
Syntax 
ClassName objectName = new ClassName(arguments); 
); 
Examples 
Scanner sc = new Scanner(System.in); 
// creates a Scanner object named sc 
Date now = new Date(); 
// creates a Date object named now 
How to call a method from an object 
Syntax 
objectName.methodName(arguments) 
Examples 
double subtotal = sc.nextDouble(); 
// get a double entry from the console 
String currentDate = now.toString(); 
// convert the date to a string 
Murach’s Java Programming, C2 
© 2011, Mike Murach & Associates, Inc. 
Slide 
19 
How to call a static method from a class 
Syntax 
ClassName.methodName(arguments) 
Examples 
String sPrice = Double.toString(price); 
// convert a double to a string 
double total = Double.parseDouble(userEntry); 
// convert a string to a double 
Murach’s Java Programming, C2 
© 2011, Mike Murach & Associates, Inc. 
Slide 
20 
Common packages 
java.lang 
java.text 
java.util 
java.io 
java.sql 
java.applet 
java.awt 
java.awt.event 
javax.swing 
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