What are the parts of a switch in Java?

Syntax. The variable used in a switch statement can only be integers, convertable integers (byte, short, char), strings and enums. … Each case is followed by the value to be compared to and a colon. The value for a case must be the same data type as the variable in the switch and it must be a constant or a literal.

What is a switch in Java?

The switch statement or switch case in java is a multi-way branch statement. Based on the value of the expression given, different parts of code can be executed quickly. The given expression can be of a primitive data type such as int, char, short, byte, and char.

Which is the alternative to switch in Java language?

2) Which is the alternative to SWITCH in Java language? Explanation: We can implement a SWITCH statement using IF, ELSE IF and ELSE control statements.

Which of the following are mandatory parts of switch statement?

10. Default’ case is mandatory in a switch statement.

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What is the syntax of switch statement?

A typical syntax involves: the first select , followed by an expression which is often referred to as the control expression or control variable of the switch statement. subsequent lines defining the actual cases (the values), with corresponding sequences of statements for execution when a match occurs.

Does switch support string in Java?

Yes, we can use a switch statement with Strings in Java. … The expression in the switch cases must not be null else, a NullPointerException is thrown (Run-time). Comparison of Strings in switch statement is case sensitive.

Which keyword Cannot be used in switch?

The ‘switch’ and ‘case’ keywords

The value of the expressions in a switch-case statement must be an ordinal type i.e. integer, char, short, long, etc. Float and double are not allowed.

Which component is responsible for Java program?

The correct answer to the question “Which component is responsible to run Java program” is, option (b). JDK. As Java Development Kit, is a core component of Java, that provides all of the tools, binaries, and executables to compile, debug, and execute a Java program.

Which of the following is used with switch statement?

Which of the following is used with the switch statement? Explanation: Break is used with a switch statement to shift control out of switch.

Which of the following is a switch case structure?

A general syntax of how switch-case is implemented in a ‘C’ program is as follows: switch( expression ) { case value-1: Block-1; Break; case value-2: Block-2; Break; case value-n: Block-n; Break; default: Block-1; Break; } Statement-x; The expression can be integer expression or a character expression.

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Which feature is used then?

Discussion Forum

Que. If switch feature is used, then
b. default case, if used, should be the last case
c. default case, if used, can be placed anywhere
d. none of the above
Answer:default case, if used, can be placed anywhere

Which statement is true about the switch statement?

The statements in a switch continue to execute as long as the condition at the top of the switch remains true.

Why break is used in switch statement?

You can use the break statement to end processing of a particular labeled statement within the switch statement. It branches to the end of the switch statement. Without break , the program continues to the next labeled statement, executing the statements until a break or the end of the statement is reached.

How do you use characters in switch case?

In the code below, option matches case ‘b’ , hence its case block is executed.

  1. int main() {
  2. char option = ‘b’;
  3. switch (option)
  4. {
  5. case ‘a’:
  6. printf(“Case a hit.”);
  7. break;

Do while loops flow?

In most computer programming languages, a do while loop is a control flow statement that executes a block of code at least once, and then either repeatedly executes the block, or stops executing it, depending on a given boolean condition at the end of the block.

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