モジュール pro.eng.yui.YuiFramework

パッケージ pro.eng.yui.yuiframe.utils

インタフェース IObjectUtil

public interface IObjectUtil

Define common Object operations

導入されたバージョン:

1.0.0

バージョン:

1.0.0

作成者:

yui-KITAMURA

メソッドの概要

修飾子とタイプ	メソッド	説明
boolean	equals(Object first, Object second)	null-safe equality test.
boolean	isNotNull(Object obj)	Check the object is NOT null
boolean	isNull(Object obj)	Check the object is null
boolean	isTypeOf(Object instance, Class superClz)	check the instance is extends or implements the class

メソッドの詳細

isNull

boolean isNull(Object obj)

Check the object is null

パラメータ:

obj - check target instance or null value

戻り値:

if the object is null then true

isNotNull

boolean isNotNull(Object obj)

Check the object is NOT null

パラメータ:

obj - check target instance or null value

戻り値:

if the object is NOT null then true

equals

boolean equals(Object first,
 Object second)

null-safe equality test. Almost same as first.equals(second), but safe to null.

• null,null then true
• null,NOT-null then false
• NOT-null,null then false
• NOT-null,NOT-null then same to Object.equals(Object)

パラメータ:

first - first object

second - second object

戻り値:

almost same to Object.equals(Object). See the document body

isTypeOf

boolean isTypeOf(Object instance,
 Class superClz)

check the instance is extends or implements the class

パラメータ:

instance - instance that to be checked

superClz - expected super class or interface

戻り値:

if the instance are the child of superClz then true

関連項目:

• Class.isInstance(Object)