Tuesday, 18 August 2020

Top 11 interview question on Java for SDET/Automation Testing/Experienced?











 
 
 
 
 
 
 
 
 
This is the first set of Java questions for SDET and Automation testing, will post more posts in following weeks so stay tuned and do subscribe for future posts.
 
                                        Automation Testing(java)-Set-05

41. What is Eager and Lazy Initialization of Singleton Class ?


42. What modifiers are accepted for Main class in Java?

Ans: public, abstract & final are permitted
 
43. Write code to reverse a string without using function?

Ans:
public class reverse {
    public static void main (String args[]) {
       
            String str = "automationreinvented";
            int n = str.length();
            String rev="";
            for (int i=n-1;i>=0;i--)
             rev = rev + str.charAt(i);
            System.out.println(rev);

          }
    }

44. How to do string manipulation in java?


45. Write a Java function which will return the maximum number in array?

Ans:
static int max()
    {
    int i;
    int max = findmaximum[0];
    for (i=1;i<findmaximum.length;i++)
   
        if (findmaximum[i] > max)
            max = findmaximum[i];
       
        return max;
    }

46. How to sort an Array using function?

Ans:
public class sortIntegerArray {
   
        public static void main(String[] args) {
            int[] arr={2,9,3,5,4,7,1,8,6};
            int temp;
            Arrays.sort(arr);
            for(int i=0;i<arr.length;i++)
            {
                System.out.println(arr[i]);
            }

        }
    }

47. How to Add/Join/Combine two arraylist?



48. How to convert List to array and array to list?

Ans: To convert List to Array:   list.toArray();
To convert Array to List:   Arrays.asList(Array);

49. How to get length of Array and List?

Length of array: array.length();
Size of list: list.size();

50. Difference between comparable and comparator in Java?

 
51. How to call a method in Java with and without object?
 

Want to learn more? ...Check below link for more java interview question:
 

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TOP 15 BDD - CUCUMBER Interview Q&A


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