Interview preparation Topic

 Object class and its method.

Class and object

equal() and Hash()

String vs String()

StringBuilder vs String Buffer.

Opps Pilor

Interface

Abstraction

functional interview question 

consumer

supplyer

function

Bifunctional 

Predicate<Integer>isEven = x -> x%2==0;
Predicate<Integer>isNotNull =  x->x!=null;
System.out.println(isNotNull.and(isEven).test(null));
System.out.println(isEven.test(2));
System.out.println(isEven.test(3));

Supplier<String>supplier = () -> String.valueOf(UUID.randomUUID());
System.out.println(supplier.get());

Consumer<String> toUpperCase = x->System.out.println(x.toUpperCase());
toUpperCase.accept("Hello, world!");


Function<String,Integer>function = x->x.length();
System.out.println(function.apply("test"));


BiFunction<String,String,Integer>biFunction = ( a, b) -> a.length() + b.length();
System.out.println(biFunction.apply("ravi","bhushan"));

BiConsumer<String,String>biConsumer = (a,b)-> System.out.println(a+b);
biConsumer.accept("lll","kkk");


BiSupplierWithReturn biSupplierWithReturn = (a,b)-> List.of(a,b);
System.out.println(biSupplierWithReturn.apply(1,3));