How to print out the contents of the list on a single line In this printNumbers method i need it to print out the integers in the numbers list. And im not sure what im doing wrong. public class WrapperExample { private Scanner scanner; private ArrayList numbers; /** * Constructor for objects of class WrapperExample. */ public WrapperExample() scanner = new Scanner(System.in); numbers = new ArrayList<>(); } /** * Read integer from standard input (System.in) * and store them in the list. The end of the * input is indicated by a negative integer. * The negative integer must not be stored in the list. */ public void readNumbers() { int i = scanner.nextInt(); // Get rid of any previous numbers. numbers.clear(); // Read a fresh set of integers ... while (i >= 0){ numbers.add(i); } i = scanner.nextInt(); /** * Print out the integers in the numbers list. * Print the numbers on a single line, with a single space * between each. */ public void printNumbers() { // Print out the numbers. // Terminate the line. for(Integer interger: numbers){ System.out.println(scanner.nextInt()); }
How to print out the contents of the list on a single line In this printNumbers method i need it to print out the integers in the numbers list. And im not sure what im doing wrong. public class WrapperExample { private Scanner scanner; private ArrayList numbers; /** * Constructor for objects of class WrapperExample. */ public WrapperExample() scanner = new Scanner(System.in); numbers = new ArrayList<>(); } /** * Read integer from standard input (System.in) * and store them in the list. The end of the * input is indicated by a negative integer. * The negative integer must not be stored in the list. */ public void readNumbers() { int i = scanner.nextInt(); // Get rid of any previous numbers. numbers.clear(); // Read a fresh set of integers ... while (i >= 0){ numbers.add(i); } i = scanner.nextInt(); /** * Print out the integers in the numbers list. * Print the numbers on a single line, with a single space * between each. */ public void printNumbers() { // Print out the numbers. // Terminate the line. for(Integer interger: numbers){ System.out.println(scanner.nextInt()); }
Chapter9: Advanced Array Concepts
Section: Chapter Questions
Problem 18RQ
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