Prime Generator

import java.util.*;
import java.lang.*;

class Main
{
	public static void main (String[] args) throws java.lang.Exception
	{
		try{
		Scanner sc=new Scanner(System.in);
         int t=sc.nextInt();
         int[] a=new int[100];
         int[] c=new int[100];
         int m,n,count,ln=0,k=0;
         if(t>10){
             System.out.println("Invalid Input");
             System.exit(0);
         }
         for(int i=0;i<t;i++){
             m=sc.nextInt(); n=sc.nextInt();
             for(int j=m;j<=n;j++){
               count=0;
                 if(j!=1){
                    if(j==2){
                       a[ln]=j;
                       ln++;
                    }
                    else{
                 for(int l=2;l<=j/2;l++){
                     if(j%l==0){
                        count++;
                     }
                     
                    }
                 if(count==0){
                     a[ln]=j;
                     ln++;
                 }}
             }
                 if(j==n){
                     c[k]=ln;
                     k++;
                 }
             }
         }
         int p=0;
         for(int i=0;i<ln;i++){
             System.out.println(a[i]);
             if(c[p]==i+1){
                 System.out.println("");
                 p++;
             }
         }
		}
		catch(Exception e){
			
		}
	}
}

This is my code and its giving correct output and also running properly in Ideone. but still its showing Wrong answer. Can anyone help me?