Class pair
public static class pair { int x; int y; public void pair(int x, int y) { this.x = x; this.y = y; } }
main
function
What I want to do is to create an array of objects of class pair
and take input in the array of objects
public static void main(String args[]) { Scanner sc = new Scanner(System.in); pair[] p = new pair[2]; for (int i = 0; i < 2; i++) { p[i].x = sc.nextInt(); // here I get the error is "Cannot assign field "x" because "p[i]" is null" p[i].y = sc.nextInt(); } }
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Answer
public static void main(String[] args) { Scanner sc = new Scanner(System.in); pair[] p; int x, y; p = new pair[2]; for (int i = 0; i < p.length; i++) { x = sc.nextInt(); y = sc.nextInt(); p[i] = new pair(x,y); // Assign Object Instead of assigning to class members } for (int j = 0; j < p.length; j++) { System.out.println(p[j].x + " "+ p[j].y); } }