标签：you return sid port str ice java amp com
In Kotlin, there is no static methods, but we can use companion object which works the same as static methods.
For example, a class:
package com.rsk import java.security.Provider import java.security.Security class Providers { // similar as static companion object { fun getProviders(): List<Provider> { val providers = Security.getProviders(); val listOfProviders: List<Provider> = providers.asList() return listOfProviders } } fun getProviders(): List<Provider> { val providers = Security.getProviders(); val listOfProviders: List<Provider> = providers.asList() return listOfProviders } }
You notice there are two functions called ‘getProviders‘, the first one is inside companion object.
The companion is singelton.
Usage:
val providers = Security.getProviders();
For the second ‘getProviders‘, usage:
val providers = Providers()
val allProviders = providers.getAllProviders()
As you can see, using companion object is musch cleaner way to write the code
[Kotlin] companion object == static method
标签：you return sid port str ice java amp com
原文地址：https://www.cnblogs.com/Answer1215/p/13822202.html
