help please! i want display what i written with a method

Question

import java.util.Scanner;
public class HelloWorld {
public static Scanner sc =new Scanner(System.in);
public static void main(String[] args)
{
String [] tab =new String[1];
int res=0, n=3;
System.out.println("Hello world!");

do{
question(tab);
res++;
}while(res<n);
afficher(tab);
}
public static void question(String[]tab){
String Q;
for(int i=0;i<tab.length;i++){
System.out.println("Entrez une question :");
Q=sc.nextLine();
tab[i]=Q;
}

}
public static void afficher(String []tab){
for(int i=0;i<tab.length;i++){
System.out.println(tab[i]);
}

}
}

Answer 1

The problem here is that you've created a String array with a single element and your loop will assign to the same string 3 times. It's a simple fix.

1. You'd have to change String[] tab = new String[1] to
String[] tab = new String[3];

2. Since the question() method already assigns the questions to your tab-array based on its
length, the loop is unnecessary. You can simply call question(tab) directly from main.

Alternatively, you can keep the do-while loop in your main method and change it to:

do {
tab[res] = getQuestion();
res++;
} while (res < n);

And have a method return the question as a String.

public static String getQuestion()
{
String question;
System.out.println("Entrez une question:");
question = sc.nextLine();

return question;
}

If you go with the 2nd approach, I would suggest assigning tab.length to 'n' in case you want to expand/shrink the array in the future and to eliminate errors/magic numbers.

Answer 2

thanks for your answer it works fine.
Happy New Year