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Thread: A little help need to complete my tutorial question

  1. #1
    Junior Member
    Join Date
    Mar 2011
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    Default A little help need to complete my tutorial question

    I need to write a program that will prompts user to input 5 persons' name and age one by one and store them into an array of Person class.

    The problem of the code below is that, the program will not prompts the user to key in the name for 2nd - 5th persons after successfully insert name and age for 1st person.

    I found a solution is that instead of using scanner.nextLine(), using a scanner.next() will solve the problem. But instead of reading person name of 1 word, I want to read the name with spaces in between as well.

    Sorry for bad english.
    Any help?

    import java.util.Scanner;
    class PersonList {
        public static void main (String[] args) {
            Person [] list = new Person [5];
            Scanner scanner = new Scanner(System.in);
            for (int i=0; i<list.length; i++) {
               System.out.print("Enter name: ");
               String name = scanner.nextLine();
               System.out.print("Enter age: ");
               int age = scanner.nextInt();
               Person p = new Person(name,age);
               add(list, i, p);
        public static void add(Person [] persons, int i, Person p) {
            persons[i] = p;
        public static void display(Person [] persons) {
            for(int i=0; i<persons.length ; i++)
            	System.out.println(persons[i].getName()+ " " + persons[i].getAge() );

    class Person
    	private String name;
    	private int age;
    	public Person(String name,int age)
    		this.name = name;
    		this.age = age;
    	public String getName()
    		return name;
    	public int getAge()
    		return age;

  2. #2
    Crazy Cat Lady KevinWorkman's Avatar
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    Oct 2010
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    Default Re: A little help need to complete my tutorial question

    It's because you're getting an Exception, right? What is that Exception?

    Hint- Calling nextLine() reads the rest of the current line, including the "enter" at the end of the line. Calling next() or nextInt() only reads in the next word or int, without reading the "enter" at the end of the line. So what do you think happens the first time you call nextInt()?
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