Logical Operators in If Conditions

Question

What is the error that prevents this code from compiling?
 
```java
public class Test {
    public static void main(String[] args) {
        boolean a = true, b = false;
        if(a, b) {
            System.out.println("Invalid operator usage");
        }
    }
}
```

Accepted Answer

The if condition incorrectly uses a comma to separate boolean expressions instead of a proper logical operator.

Answer

The main method signature is invalid.

Answer

The boolean variables a and b are declared in the wrong order.

Answer

The System.out.println statement should be enclosed in braces.

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