Array Code difficulties

[NixasMuraki]

I'm creating a mini program that makes a roster. I haven't finished it yet, but I'm writing it in BlueJ and it keeps yelling at me and saying that a class is expected for the line that I will mark in the below code. Also I want to make it so the user can enter in how many elements the array will have, but I don't know how to do that either...it's really kind of sad. The code that's marked out and commented at the top was my sad attempt even though I knew it wouldn't work I was kind of hoping...anyway here it is:

import javax.swing.*;

public class Roster{

/*System.out.println("Please type in the number of students in your class.");
Scanner students=new Scanner(System.in);
int intstudents=students.nextLine()-1;*/

String[]names=newString[100/*intstudents*/]; /* Ijust figured that 101 students would be enough this way the teacher will have enough elements for the number of students*/
int[]age=new int[100/*intstudents*/]; //these are parallel arrays

public static void main(String[]args){
new Roster().theWholeClass();
}

public void the WholeClass(){

for(int i=0; i<names.length;i++){
names[i]=JOptionPane.showInputDialog("Type in student's name");
age[i]=int.parseInt(JOptionPane.showInputDialog("Type in student's age");
}
printData();
}

[Junky]

int is a primitive data type and not a class nor a valid variable name.

[Junky]

public class Roster{

/*System.out.println("Please type in the number of students in your class."); 
Scanner students=new Scanner(System.in);
int intstudents=students.nextLine()-1;*/

You cannot have code like this floating about in the class. Only instance variable declarations and static initialiser blocks can be outside methods and constructors.