Deadlines

1
01-13

• Deadlines
• Assignment 2 due 1/18
• Last time
• Input from files and strings
• Command-line arguments
• The String class
• syntax diagrams and "well-formed strings"
• characters and character codes
• positional sequences and subsequences
• This time
• a couple of String examples
• mutating versus copying operations
• variables and constants
• numbers and other primitive things

2
More Than One Way to Build a String
int i 17 // Using the operator
System.out.println("The answer is " i) //
Building the string from "left to
right" System.out.println ("The".concat("
").concat("answer").concat(" ").concat("is").conca
t(" ") i) // Building the string from
"right to left" System.out.println
("The".concat(" ".concat("answer".concat("
".concat("is".concat(" "))))) i)

• Questions
• Why the (informal) comment "left to right" vs.
  "right to left"?
• Why do all three feature " i" at the end?
  Could we replace that with another
  call to concat()?