OS_OPEN_STREAM

[marcoym2]

report name: OS_OPEN_STREAM

To reproduce:
Eclipse development env:
SpotBugs
Expected Behavior:
the file open the stream and without a close stream, which will make the application memory leaking and crash

    try
    {           
    File f = new File("backup");
    if(f.exists())
    {
        FileInputStream fin=new FileInputStream(f);
        ObjectInputStream ois=new ObjectInputStream(fin);
        Hotel.hotel_ob=(holder)ois.readObject();
    }
    Scanner sc = new Scanner(System.in);
    int ch,ch2;
    char wish;
    x:
    do{

    System.out.println("\nEnter your choice :\n1.Display room details\n2.Display room availability \n3.Book\n4.Order food\n5.Checkout\n6.Exit\n");
    ch = sc.nextInt();
    switch(ch){
        case 1: System.out.println("\nChoose room type :\n1.Luxury Double Room \n2.Deluxe Double Room \n3.Luxury Single Room \n4.Deluxe Single Room\n");
                ch2 = sc.nextInt();
                Hotel.features(ch2);
            break;
        case 2:System.out.println("\nChoose room type :\n1.Luxury Double Room \n2.Deluxe Double Room \n3.Luxury Single Room\n4.Deluxe Single Room\n");
                 ch2 = sc.nextInt();
                 Hotel.availability(ch2);
            break;
        case 3:System.out.println("\nChoose room type :\n1.Luxury Double Room \n2.Deluxe Double Room \n3.Luxury Single Room\n4.Deluxe Single Room\n");
                 ch2 = sc.nextInt();
                 Hotel.bookroom(ch2);                     
            break;
        case 4:
             System.out.print("Room Number -");
                 ch2 = sc.nextInt();
                 if(ch2>60)
                     System.out.println("Room doesn't exist");
                 else if(ch2>40)
                     Hotel.order(ch2-41,4);
                 else if(ch2>30)
                     Hotel.order(ch2-31,3);
                 else if(ch2>10)
                     Hotel.order(ch2-11,2);
                 else if(ch2>0)
                     Hotel.order(ch2-1,1);
                 else
                     System.out.println("Room doesn't exist");
                 break;
        case 5:                 
            System.out.print("Room Number -");
                 ch2 = sc.nextInt();
                 if(ch2>60)
                     System.out.println("Room doesn't exist");
                 else if(ch2>40)
                     Hotel.deallocate(ch2-41,4);
                 else if(ch2>30)
                     Hotel.deallocate(ch2-31,3);
                 else if(ch2>10)
                     Hotel.deallocate(ch2-11,2);
                 else if(ch2>0)
                     Hotel.deallocate(ch2-1,1);
                 else
                     System.out.println("Room doesn't exist");
                 break;
        case 6:break x;
            
    }
       
        System.out.println("\nContinue : (y/n)");
        wish=sc.next().charAt(0); 
        if(!(wish=='y'||wish=='Y'||wish=='n'||wish=='N'))
        {
            System.out.println("Invalid Option");
            System.out.println("\nContinue : (y/n)");
            wish=sc.next().charAt(0); 
        }
        
    }while(wish=='y'||wish=='Y');    
    
    Thread t=new Thread(new write(Hotel.hotel_ob));
    t.start();
    }        
        catch(Exception e)
        {
            System.out.println("Not a valid input");
        }
}

}

enviorment:
eclipse env:
Possible solution: should close the file stream without making the application crash
Impact: high
Severity: high