List of practice Questions

Which of the following service allows users to communicate with peers using voice, video as well as text?
Which of the following method of Arrays class is used to fill the whole or partial array with specified value in Java?
If array is declared as given below Java statement, how many bytes require to store it in memory?
int marks[][] = new int[5][3];
Which of the following constructor of string class is used to create a string object with no character in Java?
Which of the following method of string class returns a string with all characters of invoking string converted to uppercase in Java?
Which of the following method of Date class constructs Date object using current system time in Java?
What is the full form of TAR?
If ‘str’ is the object of string class and its content is “Best-Luck”, then what is the value of str.length() in Java?
What type of value is returned when we use get method of Calendar class with constant DAY_OF_WEEK as an argument in Java?
Which of the following option is useful to represent vector, matrix and other multi-dimensional data in Java?
Which of the following option is a special portion of memory, where the objects live in Java?
Which of the following option looks for unused objects and reclaims the memory that those objects are using in Java?
Which of the following variables defined inside methods or blocks in Java?
Which of the following is not the four P’s of protection in Java?
Which of the following level is the highest level of protection in Java?
Which of the following method is used to allow data to be modified by others in Java?
Which of the following statement is used to transfer the control outside switch or loop structure in Java?
Which of the following defines attributes and methods in Java?
Which of the following operator creates an object and returns its reference in Java?
Which of the following is not allowed as first character in valid variable name in Java?
What will be the result of arithmetic expression –7%2 in Java?
When the Java program gets compiled without errors, compiler creates a file with which of the following extension?
Which of the following menu option is used to execute Java program in SciTE editor?
Which of the following option protects data by making them inaccessible from outside in Object Oriented Programming?
Which of the following option enables to represent data in which the implementation details are hidden in Object Oriented Programming?