java.lang.Object
- org.codehaus.janino.Java

```
public final class Java
extends Object
```
This wrapper class defines classes that represent the elements of the Java™ programming language.
Notice:
'JLS7' refers to the Java Language Specification, Java SE 7 Edition.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static class`	`Java.AbstractTypeBodyDeclaration`	Abstract implementation of `Java.TypeBodyDeclaration`.
`static class`	`Java.AbstractTypeDeclaration`	Abstract implementation of `Java.TypeDeclaration`.
`static class`	`Java.AlternateConstructorInvocation`	Representation of a JLS7 8.8.7.1.
`static class`	`Java.AmbiguousName`	Representation of a JLS7 6.5.2 'ambiguous name'.
`static interface`	`Java.Annotation`	Representation of a Java ™ annotation.
`static class`	`Java.AnonymousClassDeclaration`	Representation of a JLS7 15.9.5 'anonymous class declaration'.
`static class`	`Java.ArrayAccessExpression`	Representation of a JLS7 15.13 'array access expression'.
`static class`	`Java.ArrayInitializer`	Representation of a JLS7 10.6 'array initializer'.
`static interface`	`Java.ArrayInitializerOrRvalue`	The union of `Java.ArrayInitializer` and `Java.Rvalue`.
`static class`	`Java.ArrayLength`	Representation of the JLS7 10.7 array type 'length' pseudo-member.
`static class`	`Java.ArrayType`	Representation of a JLS7 10.1 'array type'.
`static class`	`Java.AssertStatement`	Representation of the JLS7 14.10 ASSERT statement.
`static class`	`Java.Assignment`	Representation of all JLS7 15.26 assignments.
`static class`	`Java.Atom`	Abstract base class for `Java.Type`, `Java.Rvalue` and `Java.Lvalue`.
`static class`	`Java.BasicType`	Representation of a JLS7 18 "basic type" (obviously equivalent to a JLS7 4.2 "primitive type").
`static class`	`Java.BinaryOperation`	Representation of all non-operand-modifying binary operations.
`static class`	`Java.Block`	Representation of a Java™ "block" (JLS7 14.2).
`static interface`	`Java.BlockStatement`	Everything that can be compiled to code, e.g.
`static class`	`Java.BooleanLiteral`	Representation of a "boolean literal" (JLS7 3.10.3) (type `boolean`).
`static class`	`Java.BooleanRvalue`	Base class for `Java.Rvalue`s that compile better as conditional branches.
`static class`	`Java.BreakableStatement`	Base class for statements that can be terminated abnormally with a "break" statement.
`static class`	`Java.BreakStatement`	Representation of the JLS7 14.15 BREAK statement.
`static class`	`Java.Cast`	Representation of a JLS7 15.16 'cast expression'.
`static class`	`Java.CatchClause`	Representation of a JLS7 14.20.1 CATCH clause.
`static class`	`Java.CharacterLiteral`	Representation of a "character literal" (JLS7 3.10.4) (type `char`).
`static class`	`Java.ClassDeclaration`	Base for the various class declaration kinds.
`static class`	`Java.ClassLiteral`	Representation of a JLS7 15.8.2 'class literal'.
`static class`	`Java.CompilationUnit`	Holds the result of `Parser.parseCompilationUnit()`.
`static class`	`Java.ConditionalExpression`	Representation of a JLS7 15.25 'conditional operation'.
`static class`	`Java.ConstructorDeclarator`	Representation of a constructor declarator.
`static class`	`Java.ConstructorInvocation`	Abstract bas class for `Java.SuperConstructorInvocation` and `Java.AlternateConstructorInvocation`.
`static class`	`Java.ContinuableStatement`	Base class for statements that support the 'continue' statement.
`static class`	`Java.ContinueStatement`	Representation of the JLS7 14.16 CONTINUE statement.
`static class`	`Java.Crement`	Representation of a JLS7 15.14.2 'postfix increment operation', a JLS7 15.14.3 'postfix decrement operation', a JLS7 15.15.1 'prefix increment operation' or a JLS7 15.15.2 'prefix decrement operation'.
`static interface`	`Java.DocCommentable`	Representation of a Java™ element that can be annotated with a DOC comment ('`/** ...`
`static class`	`Java.DoStatement`	Representation of a JLS7 14.13 DO statement.
`static interface`	`Java.ElementValue`	Base of the possible element values in a `Java.NormalAnnotation`.
`static class`	`Java.ElementValueArrayInitializer`	An element value in the form of an array initializer, e.g.
`static class`	`Java.ElementValuePair`	Representation of a 'name = value' element in a `Java.NormalAnnotation`.
`static class`	`Java.EmptyStatement`	Representation of the "empty statement", i.e.
`static class`	`Java.EnclosingScopeOfTypeDeclaration`	Lazily determines and returns the enclosing `Java.Scope` of the given `Java.TypeDeclaration`.
`static class`	`Java.ExpressionStatement`	Representation of the JLS7 14.8 'expression statement'.
`static class`	`Java.FieldAccess`	Representation of an access to a field of a class or an interface.
`static class`	`Java.FieldAccessExpression`	Representation of a JLS7 15.11 'field access expression', including the "array length" pseudo field access.
`static class`	`Java.FieldDeclaration`	This class is derived from "Statement", because it provides for the initialization of the field.
`static class`	`Java.FloatingPointLiteral`	Representation of a "floating-point literal" (JLS7 3.10.2) (types `float` and `double`).
`static class`	`Java.ForEachStatement`	Representation of a JLS7 14.14.2 'enhanced FOR statement'.
`static class`	`Java.ForStatement`	Representation of a JLS7 14.14.1 'basic FOR statement'.
`static class`	`Java.FunctionDeclarator`	Abstract base class for `Java.ConstructorDeclarator` and `Java.MethodDeclarator`.
`static class`	`Java.IfStatement`	Representation of a JLS7 14.9 IF statement.
`static class`	`Java.Initializer`	Representation of an 'instance initializer' (JLS7 8.6) or 'static initializer' (JLS7 8.7).
`static class`	`Java.Instanceof`	Representation of a JLS7 15.20.2 'type comparison operation'.
`static class`	`Java.IntegerLiteral`	Representation of an "integer literal" (JLS7 3.10.1) (types `int` and `long`).
`static class`	`Java.InterfaceDeclaration`	Base for the various interface declaration kinds.
`static class`	`Java.Invocation`	Abstract base class for `Java.MethodInvocation` and `Java.SuperclassMethodInvocation`.
`static class`	`Java.LabeledStatement`	Representation of a JLS7 14.7 'labeled statement'.
`static class`	`Java.Literal`	Abstract base class for the various Java™ literals; see JLS7 3.10.
`static class`	`Java.LocalClassDeclaration`	Representation of a 'local class declaration' i.e.
`static class`	`Java.LocalClassDeclarationStatement`	Representation of the JLS7 14.3 'local class declaration statement'.
`static class`	`Java.LocalVariable`	Representation of a local variable while it is in scope during compilation.
`static class`	`Java.LocalVariableAccess`	Representation of a local variable access -- used during compilation.
`static class`	`Java.LocalVariableDeclarationStatement`	Representation of a JLS7 14.4 'local variable declaration statement'.
`static class`	`Java.LocalVariableSlot`	All local variables have a slot number; local variables that get written into the 'localvariabletable' also have a start and end offset that defines the variable's extent in the bytecode.
`static interface`	`Java.Locatable`	This interface is implemented by objects which are associated with a location in the source code.
`static class`	`Java.Located`	Abstract implementation of `Java.Locatable`.
`static class`	`Java.Lvalue`	Representation of an "lvalue", i.e.
`static class`	`Java.MarkerAnnotation`	Repreentation of a 'marker annotation', i.e.
`static class`	`Java.MemberClassDeclaration`	Representation of a 'member class declaration', i.e.
`static class`	`Java.MemberInterfaceDeclaration`	Representation of a 'member interface declaration', i.e.
`static interface`	`Java.MemberTypeDeclaration`	Represents a class or interface declaration where the immediately enclosing scope is another class or interface declaration.
`static class`	`Java.MethodDeclarator`	Representation of a method declarator.
`static class`	`Java.MethodInvocation`	Representation of a JLS7 15.12 'method invocation expression'.
`static class`	`Java.Modifiers`	Representation of the modifier flags and annotations that are associated with a declaration.
`static class`	`Java.NamedClassDeclaration`	Base for the various named class declarations.
`static interface`	`Java.NamedTypeDeclaration`	Represents the declaration of a class or an interface that has a name.
`static class`	`Java.NewAnonymousClassInstance`	Representation of a JLS7 15.9 'anonymous class instance creation expression'.
`static class`	`Java.NewArray`	Representation of a JLS7 15.10 'array creation expression'.
`static class`	`Java.NewClassInstance`	Representation of a JLS7 'class instance creation expression'.
`static class`	`Java.NewInitializedArray`	Representation of a JLS7 15.10 'array creation expression'.
`static class`	`Java.NormalAnnotation`	A 'normal annotation', i.e.
`static class`	`Java.NullLiteral`	Representation of a "null literal" (JLS7 3.10.7).
`static class`	`Java.Package`	Representation of a JLS7 6.5.2.1.5 'package name'.
`static class`	`Java.PackageDeclaration`	Representation of a package declaration like `package com.acme.tools;`.
`static class`	`Java.PackageMemberClassDeclaration`	Implementation of a 'package member class declaration', a.k.a.
`static class`	`Java.PackageMemberInterfaceDeclaration`	Representation of a 'package member interface declaration', a.k.a.
`static interface`	`Java.PackageMemberTypeDeclaration`	Represents a class or interface declaration on compilation unit level.
`static class`	`Java.ParameterAccess`	'Artificial' operation for accessing the parameters of the synthetic constructor of an anonymous class.
`static class`	`Java.ParenthesizedExpression`	Representation of a JLS7 15.8.5 'parenthesized expression'.
`static class`	`Java.QualifiedThisReference`	Representation of an JLS7 15.8.4 access to the current object or an enclosing instance.
`static class`	`Java.ReferenceType`	representation of a JLS7 4.3 reference type.
`static class`	`Java.ReturnStatement`	Representation of the JLS7 14.17 RETURN statement.
`static class`	`Java.Rvalue`	Representation of an "rvalue", i.e.
`static class`	`Java.RvalueMemberType`	Representation of the first part of a JLS7 15.9 'Qualified class instance creation expression': The 'a.new MyClass' part of 'a.new MyClass(...)'.
`static interface`	`Java.Scope`	Representation of a Java™ 'scope', e.g.
`static class`	`Java.SimpleConstant`	This class is not used when code is parsed; it is intended for "programmatic" literals.
`static class`	`Java.SimpleType`	This class is not used when code is parsed; it is intended for "programmatic" types.
`static class`	`Java.SingleElementAnnotation`	Representation of a 'single-element annotation', i.e.
`static class`	`Java.Statement`	Everything that can occur in the body of a method or in a block.
`static class`	`Java.StringLiteral`	Representation of a "string literal" (JLS7 3.10.5) (type `String`).
`static class`	`Java.SuperclassFieldAccessExpression`	Representation of an JLS7 'superclass field access expression', e.g.
`static class`	`Java.SuperclassMethodInvocation`	Representation of a JLS7 15.12.1.1.3 'superclass method invocation'.
`static class`	`Java.SuperConstructorInvocation`	Representation of a JLS7 8.8.7.1.
`static class`	`Java.SwitchStatement`	The JLS7 14.10 "switch" Statement.
`static class`	`Java.SynchronizedStatement`	Representation of a JLS7 14.9 SYNCHRONIZED statement.
`static class`	`Java.ThisReference`	Representation of an JLS7 15.8.3 access to the innermost enclosing instance.
`static class`	`Java.ThrowStatement`	Representation of a JLS7 14.18 THROW statement.
`static class`	`Java.TryStatement`	Representation of a JLS7 14.20 TRY statement.
`static class`	`Java.Type`	Representation of a Java™ type.
`static interface`	`Java.TypeArgument`	Representation of a JLS7 4.5.1 type argument.
`static interface`	`Java.TypeBodyDeclaration`	Representation of a "ClassBodyDeclaration" or an "InterfaceMemberDeclaration".
`static interface`	`Java.TypeDeclaration`	Base for the various kinds of type declarations, e.g.
`static class`	`Java.TypeParameter`	Representation of a type parameter (which declares a type variable).
`static class`	`Java.UnaryOperation`	Representation of a JLS7 15.15.3 'unary plus operator', a JLS7 15.15.4 'unary minus operator', a JLS7 15.15.5 'bitwise complement operator' or a JLS7 15.15.6 'logical complement operator'.
`static class`	`Java.VariableDeclarator`	Used by FieldDeclaration and LocalVariableDeclarationStatement.
`static class`	`Java.WhileStatement`	Representation of the JLS7 14.2 WHILE statement.
`static class`	`Java.Wildcard`	Representation of a JLS7 4.5.1 'wildcard'.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static String`	`join(Object[] a, String separator)`
`static String`	`join(Object[] a, String separator, int off, int len)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

join
```
public static String join(Object[] a,
                          String separator)
```
Returns:

null iff a == null, or "" iff a.length == 0, or the elements of a, converted to strings concatenated and separated with the separator

join

public static String join(Object[] a,
                          String separator,
                          int off,
                          int len)

Returns:: null iff a == null, or "" iff off >= len, or element off ... len-1 of a, converted to strings concatenated and separated with the separator

Class Java

Nested Class Summary

Method Summary

Methods inherited from class java.lang.Object

Method Detail

join

join