Java8 Version Features|SteamAPI
#java8 java8 Features
Important Interview Question:-
1.Difference between java6 and java8
2.What is Stream API
3.Sorting of programs.
4:-As strings are immutable so how we can create custom immutable class in java.
Ans:-1.class need to define as final, so that it cannot be extended.2.Declare all field as final.3.Declare all field as private.4.Only provide getter method.5.Parameterized construtor should be initilized.
final class bikash{
//member variable
private final String name;
//constructor
public bikash(String name)
{
this.name=name;
}
// Getter Method
public String getName(){
}
}
5:- what is difference between classNotFoundException and NoClassDefFoundError?
Ans:-ClassNotfoundException- An exception that occurs when you to load a class at run time using class.forName() or load class method and mention class is not found in the class path is called ClassNotFoundException
NoClassDefFoundError-An exception that occurs when a particular class is presnet at compile time but was missing at run time.
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