Class Objects

java.lang.Object

com.google.api.client.util.Objects

public final class Objects
extends Object

Helper functions that can operate on any Object.

Since:

1.14

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	Objects.ToStringHelper	Support class for toStringHelper(Object).

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Objects()

Method Summary

Modifier and Type	Method	Description
static boolean	equal(Object a, Object b)	Determines whether two possibly-null objects are equal.
static Objects.ToStringHelper	toStringHelper(Object self)	Creates an instance of Objects.ToStringHelper.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Objects

private Objects()

Method Details

equal

public static boolean equal(Object a,
 Object b)

Determines whether two possibly-null objects are equal. Returns:

• true if a and b are both null.
• true if a and b are both non-null and they are equal according to Object.equals(Object).
• false in all other situations.

This assumes that any non-null objects passed to this function conform to the equals() contract.

toStringHelper

public static Objects.ToStringHelper toStringHelper(Object self)

Creates an instance of Objects.ToStringHelper.

This is helpful for implementing Object.toString(). Specification by example:

// Returns "ClassName{}"
Objects.toStringHelper(this)
.toString();

// Returns "ClassName{x=1}"
Objects.toStringHelper(this)
.add("x", 1)
.toString();

// Returns "MyObject{x=1}"
Objects.toStringHelper("MyObject")
.add("x", 1)
.toString();

// Returns "ClassName{x=1, y=foo}"
Objects.toStringHelper(this)
.add("x", 1)
.add("y", "foo")
.toString();

// Returns "ClassName{x=1}"
Objects.toStringHelper(this)
.omitNullValues()
.add("x", 1)
.add("y", null)
.toString();

Parameters:

self - the object to generate the string for (typically this), used only for its class name