Can you switch on strings Java?

Can you switch on strings Java?

Yes, we can use a switch statement with Strings in Java. It is recommended to use String values in a switch statement if the data you are dealing with is also Strings. The expression in the switch cases must not be null else, a NullPointerException is thrown (Run-time).

Can you switch a String?

One of the new features added in Java 7 is the capability to switch on a String. The switch statement when used with a String uses the equals() method to compare the given expression to each value in the case statement and is therefore case-sensitive and will throw a NullPointerException if the expression is null.

How do you use strings on a switch case?

String in Switch Statement Example 1

1. public class StringInSwitchStatementExample {
2. public static void main(String[] args) {
3. String game = “Cricket”;
4. switch(game){
5. case “Hockey”:
6. System.out.println(“Let’s play Hockey”);
7. break;
8. case “Cricket”:

What is a switch expression Java?

A switch statement allows a variable to be tested for equality against a list of values. Each value is called a case, and the variable being switched on is checked for each case.

Can we use Boolean in switch case?

This is another reason, why switch-case is not for boolean type. There is no default case. According to the JLS section 14.11: for a switch ( Expression ) SwitchBlock : Expression can only be char, byte, short, int, Character, Byte, Short, Integer, String, or an enum type other wise a compile-time error occurs.

Can we use Boolean in switch-case?

Can you use a switch statement with a string C?

The switch statement is a multiway branch statement. It provides an easy way to forward execution to different parts of code based on the value of the expression. String is the only non-integer type which can be used in switch statement.

How do you use switches in Java?

The Java switch expression must be of byte, short, int, long (with its Wrapper type), enums and string. Each case statement can have a break statement which is optional….Syntax:

1. switch(expression){
2. case value1:
3. //code to be executed;
4. break; //optional.
5. case value2:
6. //code to be executed;
7. break; //optional.
8. ……

What types of expressions can be used in a switch?

A switch works with the byte , short , char , and int primitive data types. It also works with enumerated types (discussed in Enum Types), the String class, and a few special classes that wrap certain primitive types: Character , Byte , Short , and Integer (discussed in Numbers and Strings).

Can you use a string in a switch statement in Java?

String in Switch Statement. In Java 7, Java allows you to use string objects in the expression of switch statement. In order to use string, you need to consider the following points: It must be only string object. String object is case sensitive. No Null object.

Can you use a string in Java 7?

In Java 7, Java allows you to use string objects in the expression of switch statement. In order to use string, you need to consider the following points: It must be only string object. String object is case sensitive. No Null object

How is the switch statement in Java case sensitive?

The switch statement compares the String object in its expression with the expressions associated with each case label as if it were using the String.equals method; consequently, the comparison of String objects in switch statements is case sensitive.

Which is more efficient Java switch or IF THEN ELSE?

The Java compiler generates generally more efficient bytecode from switch statements that use String objects than from chained if-then-else statements.