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Building Java Programs Chapter 4
Building Java Programs Chapter 4 Conditional Execution Copyright (c) Pearson 2013. All rights reserved. The if statement Executes a block of statem...
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Building Java Programs Chapter 4 Conditional Execution
Copyright (c) Pearson 2013. All rights reserved.
The if statement Executes a block of statements only if a test is true if (test) { statement; ... statement; }
• Example: double gpa = console.nextDouble(); if (gpa >= 2.0) { System.out.println("Application accepted."); } 2
The if/else statement Executes one block if a test is true, another if false if (test) { statement(s); } else { statement(s); }
• Example: double gpa = console.nextDouble(); if (gpa >= 2.0) { System.out.println("Welcome to Mars University!"); } else { System.out.println("Application denied."); } 3
Relational expressions • if statements and for loops both use logical tests. for (int i = 1; i = >= >= >=
3 + 5 * (7 - 1) 3 + 5 * 6 3 + 30 33
• Relational operators cannot be "chained" as in algebra. 2
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