Static vs Instance Variables

Question

Consider the following partial class definition.

```java
public class BankAccount {
    private double balance;
    private static double interestRate;
    private static int nextAccountNumber = 1000;
    
    // constructor and methods not shown
}
```

Which of the following statements about these variable declarations is correct?

Accepted Answer

interestRate and nextAccountNumber are shared by all BankAccount objects, while balance is unique to each object

Answer

nextAccountNumber should be declared as an instance variable since each account needs a unique number

Answer

balance and interestRate are instance variables, while nextAccountNumber is a class variable

Answer

All three variables are accessible from static methods without creating an object instance

Rank	User	Correct Count	Attempt Count	Total Time	Score
#1	Ishaan.m.kurup	2	5	0m 00s	170
#2	songqiuhui2012	2	2	0m 32s	168
#3	sgarv2513	1	1	0m 00s	100
#4	sailajavadlamani33	1	1	0m 00s	100
#5	y.seong2027	0	1	1m 36s	-106
#6	suhanakochhar006	1	4	7m 34s	-384
#7	bommasam000	2	4	15m 14s	-734

Static vs Instance Variables

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