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Update 100_JS_Que #16

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23 changes: 23 additions & 0 deletions 100Questions/100_JS_Que
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Original file line number Diff line number Diff line change
Expand Up @@ -1734,3 +1734,26 @@ function MCQ24() {
*/
}
// MCQ24();

---------------------******------------------------------------------------
Explain Optional in java with example?

Answer:
Optional<String> country = Optional.of("India");
Optional<String> emp2 = Optional.empty();

System.out.println(country.filter(g->g.equals("india")));
System.out.println(country.filter(g->g.equalsIgnoreCase("india")));
System.out.println(country.filter(g->g.equals("India")).get());

if(country.isPresent()) {
System.out.println("country present is "+country);
}

country.ifPresent(c->System.out.println("country is "+c));
System.out.println(country.orElse("No country is present"));

emp2.ifPresent(c->System.out.println("country here is "+c));
System.out.println(emp2.orElse("No country is present here"));

---------------------******------------------------------------------------