Identifying Errors in Java Expression Code

1
And keyword used in the statement is not valid for and operator between two statements. Secondly, these statements are not being combined by a round bracket making the whole logic wrong. The correct piece of Code should be
(b2 == b1 && a1 <= a1)
2
There is a problem with a semicolon in this code. The semicolon after the if statement is closing the if loop. We need to add the print statement in the if loop. Thus the correct code is.
if (a1 == 4)
System.out.println("a1 equals 4");
3
In this statement there is no need of the equal operator in the if statement. In case the value of b2 is considered as a Boolean. It directly passes a true value for the if statement without any equal operator being used. Thus the corre...