declaration Comparison Table

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declaration comparison table

Subject define have syntax terminate by be is a kind of is a synonym of is a subtopic of have example place occur create locate have purpose import be part of has definition declare contain

array declaration square brackets following the type declaration Arrays
int[] anIntArray = new int[25];
byte[] aByteArray; // not initialized
Account[] anAccountArray = new Account[numAccounts];
definition

class declaration
if a class declaration does not contain an extends clause
then the class is a direct subclass of Object class by default

public abstract final class nameOfClass extends Super implements Interfaces
declaration Classes
public class HelloWorld
to specify the class definition A declaration that specifies a class and does not include the class body the class name

import statement
import packageName.*
OR
import packageName.className
a semicolon not more than one line long if possible statement import declaration Packages
//Import the Circle class from the graphics package
import graphics.Circle;

//Import the entire graphics package
import graphics.*;

after the package statement
and before any class or interface definitions
to allow a class to use the facilities of another package 1 member class of a package or imports on demand 0 or more member classes from a package definition A statement that permits using references to other packages without prefixes

interface declaration
public interface interfaceName extends superInterfaces
declaration Interfaces
public class AnimatedSign extends javax.swing.JApplet
to declare an interface 1 interface definition
the interface's name
0 or 1 access modifiers for the interface
0 or more superinterfaces

method declaration the method
accessLevel static abstract final native synchronized returnType methodName (parameterList) throws exceptions
declaration Methods
int[] makeRange(int lower, int upper)
to declare a method definition

object declaration
type name
where type may be the name of a class or an interface declaration Objects
Rectangle rect;
a new object to declare an object, without actually creating it definition

package statement
package packageName
a semicolon the first statement in the source file except for comments statement package declaration Packages
package com.naviseek.canasta
at the beginning of a file to specify the name of the package to which the compilation unit in which the package declaration is put belongs definition A statement that declares the name of the package the file defines package information about the class in the source file

parameter declaration
type parameterName
declaration Variables and Data Types to declare a parameter definition

variable declaration
accessLevel static final transient volatile type variableName
declaration Variables and Data Types
Rectangle rect = new Rectangle();
practically anywhere in Java source code although it is good practice to only declare variables at the beginning of blocks to declare a variable definition the type name and the variable name

Subject		define	have syntax	terminate by	be	is a kind of	is a synonym of	is a subtopic of	have example	place	occur	create	locate	have purpose	import	be part of	has definition	declare	contain
array declaration			square brackets following the type			declaration		Arrays	int[] anIntArray = new int[25]; byte[] aByteArray; // not initialized Account[] anAccountArray = new Account[numAccounts];							definition
class declaration	if a class declaration does not contain an extends clause then the class is a direct subclass of Object class by default		public abstract final class nameOfClass extends Super implements Interfaces			declaration		Classes	public class HelloWorld					to specify the class		definition	A declaration that specifies a class and does not include the class body		the class name
import statement			**import packageName.*** OR import packageName.className	a semicolon	not more than one line long if possible	statement	import declaration	Packages	//Import* the Circle class from the graphics package* import graphics.Circle; //Import* the entire graphics package* import graphics.*;				after the package statement and before any class or interface definitions	to allow a class to use the facilities of another package	1 member class of a package or imports on demand 0 or more member classes from a package	definition	A statement that permits using references to other packages without prefixes
interface declaration			public interface interfaceName extends superInterfaces			declaration		Interfaces	public class AnimatedSign extends javax.swing.JApplet					to declare an interface		1 interface definition		the interface's name 0 or 1 access modifiers for the interface 0 or more superinterfaces
method declaration		the method	accessLevel static abstract final native synchronized *returnType methodName* (parameterList) throws exceptions			declaration		Methods	int[] makeRange(int lower, int upper)					to declare a method		definition
object declaration			*type name* where type may be the name of a class or an interface			declaration		Objects	Rectangle rect;			a new object		to declare an object, without actually creating it		definition
package statement			package packageName	a semicolon	the first statement in the source file except for comments	statement	package declaration	Packages	package com.naviseek.canasta		at the beginning of a file			to specify the name of the package to which the compilation unit in which the package declaration is put belongs		definition	A statement that declares the name of the package the file defines		package information about the class in the source file
parameter declaration			*type parameterName*			declaration		Variables and Data Types						to declare a parameter		definition
variable declaration			accessLevel static final transient volatile *type variableName*			declaration		Variables and Data Types	Rectangle rect = new Rectangle();	practically anywhere in Java source code although it is good practice to only declare variables at the beginning of blocks				to declare a variable		definition			the type name and the variable name

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