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Editorial Team
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Asked: 2026-05-22T21:12:57+00:00

According to The Java Tutorials , in Java SE 7 and later, you can

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According to The Java Tutorials, in Java SE 7 and later, you can use a String object in the switch statement’s expression. 

String s = ...
switch(s){
    //do stuff
}

But is this true? I’ve installed the JRE and added it to the build path of my Eclipse project, but I’m getting the following compile-time error:

Cannot switch on a value of type
String. Only convertible int values or
enum constants are permitted

Also, I think I’ve got it configured correctly since I was able to use its java.nio.file.Files class, as well as JLayer.

Any ideas?

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1 Answer

  1. Editorial Team

    While it is true that the JDT team has implemented the Switch on String feature, the support for Java 7 won’t be before Eclipse 3.7.1:

    See bug 288548:

    Due to late availability of JSR-292 (Invoke Dynamic) and JSR-334 (Project Coin)
    and due to the official release date (July 28, 2011) of Java 7 being after 3.7
    ships we had to defer the Java 7 support to 3.7.1. It has not yet been decided
    whether this will be available as part of the 3.7.1 downloads or as separate
    feature update.

    The work for the Java 7 features is currently in progress in the ‘BETA_JAVA7’
    branch and we will deliver separate updates for the stable builds in order to
    provide early access to the Java 7 features for interested parties.

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