4. Which line(s) of code will produce an error? * package letter; package shape; import letter.A; import letter.B; public class A { private int x; void getX() {} public class Round { void getCircumference() { A a1 = new A(); B b1 = new B(); a1.getX(); (3) b1.write(); (4) } package letter; public class B { public void write() { A a1 = new A(); a1.x = 2; (1) a1.getX(); (2) } } } 1 and 2 only 1 and 3 only 2 and 3 only 3 and 4 only 1, 2, and 3 only

4. Which line(s) of code will produce an error? * package letter; package shape; import letter.A; import letter.B; public class A { private int x; void getX() {} public class Round { void getCircumference() { A a1 = new A(); B b1 = new B(); a1.getX(); (3) b1.write(); (4) } package letter; public class B { public void write() { A a1 = new A(); a1.x = 2; (1) a1.getX(); (2) } } } 1 and 2 only 1 and 3 only 2 and 3 only 3 and 4 only 1, 2, and 3 only

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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int stop = 6; int num =6; int count=0; for(int i = stop; i >0; i-=2) { num += i; count++; } System.out.println("num = "+ num); System.out.println("count = "+ count); } }
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complete the missing code. public class Exercise09_04Extra { public static void main(String[] args) { SimpleTime time = new SimpleTime(); time.hour = 2; time.minute = 3; time.second = 4; System.out.println("Hour: " + time.hour + " Minute: " + time.minute + " Second: " + time.second); } } class SimpleTime { // Complete the code to declare the data fields hour, // minute, and second of the int type }