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3.8 Boolean Expressions

Boolean expressions have boolean data type and can only evaluate to the values true or false.

Boolean expressions, when used as conditionals in control statements, allow the program flow to be controlled during execution.

Boolean expressions can be formed using relational operators (see Section 3.9, p. 67), equality operators (see Section 3.10, p. 67), logical operators (see Section 3.11, p. 70), conditional operators (see Section 3.12, p. 72), the assignment operator (see Section 3.4, p. 47), and the instanceof operator (see Section 6.6, p. 264).



    		List of Figures
    		List of Tables
    		List of Examples
    		Foreword
    		Preface
    		Chapter 1. Basics of Java Programming
    		Chapter 2. Language Fundamentals
    		Chapter 3. Operators and Assignments
    		3.1 Precedence and Associativity Rules for Operators
    		3.2 Evaluation Order of Operands
    		3.3 Conversions
    		3.4 Simple Assignment Operator '='
    		Review Questions
    		3.5 Arithmetic Operators: '*', '/', '%', '+', '-'
    		Review Questions
    		3.6 The Binary String Concatenation Operator '+'
    		3.7 Variable Increment and Decrement Operators: '++', '--'
    		Review Questions
    		3.8 Boolean Expressions
    		3.9 Relational Operators: <, <=, >, >=
    		3.10 Equality
    		3.11 Boolean Logical Operators: '!', '^', '&', '|'
    		3.12 Conditional Operators: '&&', '||'
    		Review Questions
    		3.13 Integer Bitwise Operators: '~', '&', '|', '^'
    		3.14 Shift Operators: <<, >>, >>>
    		3.15 The Conditional Operator: '?'
    		3.16 Other Operators: 'new', '[]', 'instanceof'
    		Review Questions
    		3.17 Parameter Passing
    		3.18 Passing Primitive Data Values
    		3.19 Passing Object Reference Values
    		3.20 Passing Array References
    		3.21 Array Elements as Actual Parameters
    		3.22 'final' Parameters
    		3.23 Program Arguments
    		Review Questions
    		Chapter Summary
    		Programming Exercises
    		Chapter 4. Declarations and Access Control
    		Chapter 5. Control Flow, Exception Handling, and Assertions
    		Chapter 6. Object-oriented Programming
    		Chapter 7. Nested Classes And Interfaces
    		Chapter 8. Object Lifetime
    		Chapter 9. Threads
    		Chapter 10. Fundamental Classes
    		Chapter 11. Collections and Maps
    		Appendix A. Taking the SCPJ2 1.4 Exam
    		Appendix B. Objectives for the SCPJ2 1.4 Exam
    		Appendix C. Objectives for the Java 2 Platform Upgrade Exam
    		Appendix D. Annotated Answers to Review Questions
    		Appendix E. Solutions to Programming Exercises
    		Appendix F. Mock Exam
    		Appendix G. Number Systems and Number Representation
    		Appendix H. About the CD
    		Single-User License Agreement