Java Programming: Loops and Logic, Slides of Java Programming

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Chapter 3: Loops and Logic

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Control Statements

• If statement
• Example NumberCheck.java
• Relational operators (<, <=, >, >=, ==, !=)
• Using code blocks with If
• The else statement
• Nested If
• Example: LetterCheck.java

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• It has the following form and always returns a value of one of the two exps.
• Logical exp? exp1:exp2;
• 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

Conditional Operator and switch

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• Different types (for, while, do—while)
• 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

Loops