Objects-First with Java: A Practical Introduction using BlueJ, 6th Edition

2. Understanding class definitions

9 Documented Misconceptions

ComparisonWithBooleanLiteral

To test whether an expression is true or false, one must compare it to true or to false

ConditionalIsSequence

If-else is equivalent to sequence of two ifs

ConstructorAllocates

The constructor allocates the object

ConstructorReturnsObject

Constructors need to return objects

DeferredReturn

A return statement in the middle of a method doesn't return immediately

IfIsLoop

The body of an if statement executes repeatedly, as long as the condition holds

OutsideInMethodNesting

Nested method calls are invoked outside in

ReturnCall

Return statements need () around the return value

StringLiteralNoObject

One needs to call the String constructor to get a String object from a literal