How do I print the size of my ArrayList before entering any values?-CodePudding

System.out.println("Enter the number of elements needed: " );

    System.out.printf("Enter value 1: ");
    value.add(in.nextInt());
    System.out.printf("Enter value 2: ");
    value.add(in.nextInt());
    System.out.printf("Enter value 3: ");
    value.add(in.nextInt());
    System.out.printf("Enter value 4: ");
    value.add(in.nextInt());
    System.out.printf("Enter value 5: ");
    value.add(in.nextInt());

How do I print the size of my ArrayList before entering any values?

CodePudding user response：

you can call .size() on any list at any time, but prior to adding any values it will return 0

CodePudding user response：

In Java ArrayList is dynamic so if you haven't added any values into it the size is 0.