Account JAVA Cpa, Java

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//'main' method must be in a class 'Rextester'.
//openjdk version '11.0.5'

import java.util.*;
import java.lang.*;
class Account{
    private  int accountNumber;
    private String accountName;
    private String accountType; 
    private double accountBalance;
   public Account(int no,String n,String tp,double bal)
   {
     accountNumber=no;
     accountName=n;
     accountType=tp;
     accountBalance=bal;
    }
    public String getAccountName()
    {
	return accountName;
    }
    public double  getAccountBalance()
    {
         return accountBalance;
    }
   
}
class Rextester
{  
   public static void main (String[] args) throws java.lang.Exception
	{
		Scanner sc=new Scanner(System.in);
		Account[] ac=new Account[4];
		for(int i=0;i<4;i++)
		{
		    int num=sc.nextInt();
		    sc.nextLine();
		    String name=sc.nextLine();
		    String type=sc.nextLine();
		    double balance=sc.nextDouble(); 
		    sc.nextLine();
		    ac[i]=new Account(num,name,type,balance);
		}
		
		String newname=sc.nextLine();
		double newbalance=sc.nextDouble();
		
		
		int ans1=countAccountsByName(newname,ac);
		
		if(ans1==0)
	        System.out.println("No Account found with given account name");
	    
	        else
	        System.out.println(ans1);
		
		
		Account[] ans2=searchAccountsByBalance(newbalance,ac);
		
		if(ans2==null)
		System.out.println("No such Account exists");
		
		else{
	       
	        for(int i=0;i<ans2.length;i++)
	        {  
	           System.out.println(ans2[i].getAccountName());
	        }
		}
		
	}
    public static int countAccountsByName(String name,Account a[])
    {
     int ans=0;
     for(int i=0;i<4;i++)
     {
      if((a[i].getAccountName()).equals(name))
       ans++;
     }
     return ans;
    }
    public static Account [] searchAccountsByBalance(double amt,Account a[])
    {
      int size=0;
	for(int i=0;i<4;i++)
        {
          if((a[i].getAccountBalance())>=amt)
	   size++;
        }
      if(size==0)
     return null;
      Account arr[]=new Account[size];
      int k=0;
      for(int i=0;i<4;i++)
	{
          if((a[i].getAccountBalance())>=amt)
           {
             arr[k++]=arr[i];
	   }
	}
       Account t=null;
       for(int i=0;i<size;i++)
	{
	for(int j=i;j<size;j++)
	{
	  if((arr[i].getAccountBalance())>(arr[j].getAccountBalance()))
          {
		t=arr[i];
		arr[i]=arr[j];
		arr[j]=t;
	  }
	}
	}
      return arr;
        
     
    }
}

[ - ] Show input
Compilation time: 0.92 sec, absolute running time: 1.01 sec, cpu time: 0.59 sec, memory peak: 39 Mb, absolute service time: 2,04 sec