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Stream<Integer> s = Stream.of(1,2,3,4,5); System.out.println(s.filter(n -> n % 2 == 0).count()); output????

Optional<String> opt = Optional.ofNullable(null); System.out.println(opt.orElse("Default")); output????????

public class ObjectTest { public static void main(String[] args) { ArrayList<Integer> li=new ArrayList<Integer>(); li.add(1); li.add(2); li.add(3); li.add(null); li.set(0,6); System.out.println(li); }

public class ObjectTest { public static void main(String[] args) { String str[]= {"A","B"}; int count=0; for(String st:str) { str[count].concat("Hi Aar "+count); count++; } for(int i=0;i<str.length;i++) { System.out.println(str[i]); } } } output???????????

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Hi Now i am posting java question related Oracle associate java se 8 programmer

Hi

We will discuss questions that i faced in my interview.

1.Significance of 'key' prop in lists?

"sorry for the delay,everyone.Now i recently changed jobs.I was preparing for my job.Now we can continue.🙏😊