2 ProfessorJ Intermediate

Program

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Import ... Def ...

Import

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import Name ; import Name.* ;

Def

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Class Interface

Class

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class Id {Member ...} class Id implements Id ,Id ... {Member ...} class Id extends Id {Member ...} class Id extends Id implements Id ,Id ... {Member ...} abstract class Id {Member ...} abstract class Id implements Id ,Id ... {Member ...} abstract class Id extends Id {Member ...} abstract class Id extends Id implements Id ,Id ... {Member ...}

Interface

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interface Id {Signature ...} interface Id extends Id ,Id ... {Signature ...}

Signature

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MethodReturn Id (Type Id ,...) ; abstract MethodReturn Id (Type Id ,...) ;

Member

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Field Method Constructor

Field

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Type Id = Expression ; Type Id ;

Method

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MethodReturn Id (Type Id ,...) {Statement ...} abstract MethodReturn Id (Type Id ,...) ;

MethodReturn

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void Type

Constructor

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Id (Type Id ,...) {Statement ...}

Statement

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if (Expression) {Statement ...} else {Statement ...} return Expression ; return ; {Statement ...} super (Expression ,...) ; Type Id ; Type Id = Expression ; StatementExpression ;

StatementExpression

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Id (Expression ,...) Expression.Id (Expression ,...) super.Id (Expression ,...)

Expression

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Expression Op Expression - Expression ! Expression this Id. (expression ,...) Expression.Id (Expression ,...) super.Id (Expression ,...) Expression.Id new Id (Expression ,...) (Type) Expression Expression instanceof Type check Expression expect Expression check Expression expect Expression within Expression (Expression) Id Number Character String null true false

Name

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Id. ... Id

Op

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+ - * / < <= == > >= && ||

Type

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Id boolean int char double float long byte short

An Id is a sequence of alphanumeric characters, _, and $.