Chapter 3: Loops and Logic

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Chapter 3 Loops and Logic
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Control Statements

• If statement
• Example NumberCheck.java
• Relational operators (lt, lt, gt, gt, , !)
• Using code blocks with If
• The else statement
• Nested If
• Example LetterCheck.java

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Logical Operators

• , , , , !
• They are working upon logical expressions to
  produce true/false
• What is the difference between , (short
  cutting)
• The standard Library character manipulation
  classes (Character.isUpperCase(), etc.)

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Conditional Operator and switch

• It has the following form and always returns a
  value of one of the two exps.
• Logical exp? exp1exp2
• Example ConditionalOp.java
• The switch statement can perform multiple
  selections.
• Using the break statement
• Local variables are visible only in limited scope
• Example Scope.java

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Loops

• Different types (for, while, dowhile)
• Initialization, test, increment conditions
• Loop counters can be int or float
• Nested loops, example Factorial.java
• Break, continue, labeled break and continue
• Assertion assert logical-exp
• Compile with -source 1.4 and run with -ea,
  example TryAssertions.java