What Is True About DO Statement?

What is Polymorphism in Java?

Polymorphism means “many forms”, and it occurs when we have many classes that are related to each other by inheritance.

Like we specified in the previous chapter; Inheritance lets us inherit attributes and methods from another class.

Polymorphism uses those methods to perform different tasks..

Which of the following statements will get executed at least once even if the condition statement is true or false?

do { statements } while (expression); As we saw in a while loop, the body is executed if and only if the condition is true. In some cases, we have to execute a body of the loop at least once even if the condition is false. This type of operation can be achieved by using a do-while loop.

What is the use of break and continue statement?

Difference Between break and continuebreakcontinueWhen a break statement is encountered, it terminates the block and gets the control out of the switch or loop.When a continue statement is encountered, it gets the control to the next iteration of the loop.4 more rows

Can we use break in if in Java?

The break statement has no effect on if statements. It only works on switch , for , while and do loops. So in your example the break would terminate the for loop. See this section and this section of the Java tutorial.

How do you end if?

An IF statement is executed based on the occurrence of a certain condition. IF statements must begin with the keyword IF and terminate with the keyword END. Components within IF statements can be connected with the keywords AND or OR.

What are the 2 types of iteration?

There are two types of iteration: Count-controlled loops – used for iterating steps a specific number of times. It is used when the number of iterations to take place is already known.

Who is the father of Java?

James GoslingJava/Inventors

What is if else statement with example?

Syntax of if else statement: If condition returns true then the statements inside the body of “if” are executed and the statements inside body of “else” are skipped. If condition returns false then the statements inside the body of “if” are skipped and the statements in “else” are executed.

Which one of these is an exit controlled loop?

do while loop is the example of Exit controlled loop. Entry Controlled Loops are used when checking of test condition is mandatory before executing loop body. Exit Controlled Loop is used when checking of test condition is mandatory after executing the loop body.

What is true about break statement?

When the break statement is encountered inside a loop, the loop is immediately terminated and the program control resumes at the next statement following the loop. It can be used to terminate a case in the switch statement (covered in the next chapter).

Which statement is true about Java?

Which statement is true about java? Explanation: Java is called ‘Platform Independent Language’ as it primarily works on the principle of ‘compile once, run everywhere’. 6. Which of the below is invalid identifier with the main method?

What is the purpose of Else statement?

The if/else statement executes a block of code if a specified condition is true. If the condition is false, another block of code can be executed. The if/else statement is a part of JavaScript’s “Conditional” Statements, which are used to perform different actions based on different conditions.

Can Break be used in if statement?

A break statement terminates execution of the smallest enclosing switch or iteration statement. break will not break out of an if clause, but the nearest loop or switch clause. Also, an if clause is not called a “loop” because it never repeats its contents. The break statement has no use in decison making statements.

Which loop is guaranteed to execute at least one time?

do-while loopThe do-while loop is similar to the while loop, except that the test condition occurs at the end of the loop. Having the test condition at the end, guarantees that the body of the loop always executes at least one time.

What is if and if else statement?

if statement – executes some code if one condition is true. if…else statement – executes some code if a condition is true and another code if that condition is false. … elseif…else statement – executes different codes for more than two conditions. switch statement – selects one of many blocks of code to be executed.

What is true constructor?

What is true about constructor? Explanation: Constructor returns a new object with variables defined as in the class. Instance variables are newly created and only one copy of static variables are created. … Explanation: No instance can be created of abstract class.

What is the role of Continue statement?

The continue statement in C programming works somewhat like the break statement. Instead of forcing termination, it forces the next iteration of the loop to take place, skipping any code in between. For the for loop, continue statement causes the conditional test and increment portions of the loop to execute.

What are the 3 types of loops?

Loops are control structures used to repeat a given section of code a certain number of times or until a particular condition is met. Visual Basic has three main types of loops: for.. next loops, do loops and while loops.

What is nested IF statement?

A nested if in C is an if statement that is the target of another if statement. Nested if statements means an if statement inside another if statement. Yes, both C and C++ allows us to nested if statements within if statements, i.e, we can place an if statement inside another if statement.

What is continue statement and why we use it?

The continue statement is used inside loops. When a continue statement is encountered inside a loop, control jumps to the beginning of the loop for next iteration, skipping the execution of statements inside the body of loop for the current iteration.

How many choices are possible when using a single IF ELSE statement?

two choicesUsing IF and ELSE gives two possible choices (paths) that a program can follow. However, sometimes more than two choices are wanted. To do this, the statement ELSE IF is used.