Programmer's Guide to Java™ Certification, A: A Comprehensive Primer, Second Edition

2. Language Fundamentals

2.1

The following program will compile and run without errors: package com.acme; // Correct ordering of package and import statements. import java.util.*; public class Exercise1 { int counter; // This is rather useless public static void main(String[] args) { // Correct main signature Exercise1 instance = new Exercise1(); instance.go(); } public void go() { int sum = 0; // We could just as well have written sum = 100 // here and removed the if statement below. int i = 0; while (i<100) { if (i == 0) sum = 100; sum = sum + i; i++; } System.out.println(sum); } }

2.2

The following program will compile and run without errors: // Filename: Temperature.java /* Identifiers and keywords in Java are case-sensitive. Therefore, ...