In earlier versions, if you have to write conditional logic based on a string, you had to use if-else blocks. switch-case was also affected by the change in string to number comparison. Java 7 started support for using String in switch case. So remember to use this new, handy language feature since Java 1.7. The switch statement executes line by line (actually, statement by statement). using Strings in switch-case statement It’s recommended to declare String constants to be used in the case clause like this: // declare String constants in class level The Java break statements can be used (optional) to terminate the sequence of executables inside a case. if ‘x’ is of integer type in a switch (x), then all the Switch cases should be of integer type. In this switch statement, the String variable country is compared with the String literals in the case clause by the equals() method of the String class. The value of the Switch case should be of the same data type as the Switch case variable. Switch Statement will execute the code block for the matched. Each case switch string has a block of code. Now with Java 1.7 we can replace the above if-else statements by this much simpler and cleaner switch-case statement: String country = getCountry() Switch statement string contains multiple cases. Imagine we would have to use the following code to test a String variable against a list of values before Java 1.7: String country = getCountry() // get country from somewhere You need to use contains ('Google') and no if won't work in switch. This simple feature had been waiting for a long time before becoming available in Java 1.7. The expression used for the switch is evaluated once - in this case that would be true/false as the result, not a string. case Hockey: caseCricket: caseFootball:. The switch case matching is case sensitive, so java will not match. In other words, the switch statement tests the equality of a variable against multiple values. Rules of Switch Case Statement in Java You can only use integers, strings, and enums as the case values in a switch case statement. Each value is called a case, and the variable being switched on is checked for each case.Since Java 7, programmers can use String in the switch-case statement. In Java 7, Java allows you to use string objects in the expression of switch statement. Switch Statement with Strings in Java Im using the following code and I wonder if there is a way to do it with switch, the reason that I don't use it as default since type name is type string.(I know that this option is supported in 1.7 version but I need to use 1. Java switch case with string is more readable than the multiple if-else if-else blocks. Since Java 7, you can use strings in the switch statement. As for performance, a string switch is usually less fast than a HashMap or. My best try was to convert the Enum to a String array, but the switch doesn't seem to accept array values as a case constant. Lowercase and uppercase letters are not equal. string directly in a switch statement: String units //. Now I hit a wall trying to convert the Enum values to Strings, that I can use as case constant. The second branching statement in Java is the switch statement, which is introduced in this section. A switch statement allows a variable to be tested for equality against a list of values. Java switch case uses String.equals() method to compare the expression value with case values, so it will throw NullPointerException if passed value is null. I have got an Enum with different values and want to switch a string variable.
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