Java label statement and goto

Question

Possible Duplicate:
goto keyword in java

There is no goto in java, right ?
Why goto is still considered a keyword then ?
Label syntax (only properly* used before a loop/if statement ?? ) and called through (label, break label, continue label)

*properly cause when i used before x=3 it couldn't be read after it are there any other cases ?

            int x = 2;
        label: x = 3;
        for (int j = 0; j < 5; j++) {
            System.out.println(j);
        }
        label;  // Compile error (no local variable label)

similar (possible duplicate) questions: http://stackoverflow.com/questions/1334376/goto-keyword-in-java and http://stackoverflow.com/questions/2430782/alternative-to-goto-statement-in-java — Grzegorz Szpetkowski, Jul 11 '11 at 12:55

score 6 · Accepted Answer · answered Jul 11 '11 at 12:55

6

From section 3.9 of the JLS:

The keywords const and goto are reserved, even though they are not currently used. This may allow a Java compiler to produce better error messages if these C++ keywords incorrectly appear in programs.

answered Jul 11 '11 at 12:55

Jon Skeet

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score 3 · Answer 2 · edited May 23 '17 at 10:24

3

There is no goto in java, right ?

Yes

Why goto is still considered a keyword then ?

Yes it is considered by standards, [for official doc please see details link given by Jon]

For Labels : See this

edited May 23 '17 at 10:24

Community

1
1

answered Jul 11 '11 at 12:53

jmj

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score 1 · Answer 3 · answered Jul 11 '11 at 12:59

1 - There is no goto in Java (the language), there is goto in Java (the virtual machine)
2 - The keywords const and goto are reserved, even though they are not currently used. This may allow a Java compiler to produce better error messages if these C++ keywords incorrectly appear in programs. (from The java language specification)
3 - what is the question?

Anyway, read the The java language specification several times before going to SCJP (isn't OCJP now? )

yeah it's ocjp, I just used to call it scjp :), will edit it — Ismail Marmoush, Jul 11 '11 at 13:10

Java label statement and goto

3 Answers3