23-for-each loop + java

What is for loop and forEach loop?

• for loop is used only for arrays, while forEach loop can be used for any collection
• for loop can only iterate forward, while forEach loop can iterate forward and backward
• for loop requires an index variable, while forEach loop does not
• for loop is faster than forEach loop

What is forEach loop in Java explain with example?

• for (int i = 0; i < arr.length; i++) {System.out.println(arr[i]);}
• for (String str : list) {System.out.println(str);}
• while (iterator.hasNext()) {System.out.println(iterator.next());}
• do {System.out.println(str);} while (str != null);

Is forEach loop only for arrays?

• Yes
• No

What can forEach loops not do?

• Modify the collection being iterated
• Iterate through multiple collections at once
• Break out of the loop early
• None of the above

Is for loop same as forEach?

• Yes
• No

Is forEach faster than for Java?

• Yes
• No

What is for-each loop write the syntax of it?

• for(i=0;i<arr.length;i++)
• for(Object obj: arr)
• for(i in arr)
• for each(obj in arr)

What is the advantage of using forEach over traditional for loop?

• Better performance
• More concise code
• Both a and b
• None of the above

How does for-each loop work internally in Java?

• It uses a separate thread for each iteration
• It creates a new object for each iteration
• It uses Iterator to traverse the collection or array
• None of the above

Is forEach synchronous?

• Yes
• No