meaningless compilation error

[jay thakkar]

public class arraytest {

    //in java arrays are diferent b'cause they are used as objects
    //rather than just a sequence of memory...

    int[] anarray ;   //reference of array

    //creating storage locations for an array

    anarray = new int[5]; * compilation error *
}

y the compilation error occurd???

i m new in java but i follow oracle documentation n i m reading a book on java called "thinking in java"

i m using netbeans 6.9 which i downloaded to learn javaFx language but i can make java applications also... so i guess that must not be n issue n the JDK is 1.7

please please i can't sleep because of this error.. please help

[Winston Gutkowski]

jay thakkar wrote:please please i can't sleep because of this error.. please help

Jay,

1. Welcome to JavaRanch.
2. Please EaseUp (←click).
3. TellTheDetails (←click). What exactly is the error you''re getting?

I can assure you that the error is NOT 'meaningless'. Moreover, it's highly likely that it tells you exactly what the problem is. I suggest you re-read the message carefully, and see if you can work it out for yourself. If you still have problems, come back with the message you got, exactly as it was displayed to you.

Winston

[Steve Luke]

Also, please read the UseCodeTags page. It makes reading code a lot easier. I added the tags to your post.

The problem you are seeing is that you can't run arbitrary code in side an Class body - you can only do variable declaration and in-line initializations. so this would work because the variable declaration and initialization is on the same line:

public class arraytest {

    //in java arrays are diferent b'cause they are used as objects
    //rather than just a sequence of memory...

    int[] anarray  = new int[5];
}

If you want the initialization to be separate from the declaration, you can do that but you need to put the initialization into a block - usually a constructor:

public class arraytest {

    //in java arrays are diferent b'cause they are used as objects
    //rather than just a sequence of memory...

    int[] anarray ;   //reference of array

 
    public arraytest()
    {
    //creating storage locations for an array
       anarray = new int[5];
    }
}

But you could also use 'instance initializers' (but these aren't very common, so it can confuse people.):

public class arraytest {

    //in java arrays are diferent b'cause they are used as objects
    //rather than just a sequence of memory...

    int[] anarray ;   //reference of array

    //creating storage locations for an array
    {
        anarray = new int[5];
    }
}

[jay thakkar]

sorry guys for replying so late.... i m glad that people are so much "helping natured" here so will soon master java technologies

dont know the problem but installed JDK 7.0 and now i m able to run all the programs...

i guess the problem was to me that i just downloaded javaFX 2.1 jdk... so it did not supported basic JAVA syntax.... please correct me if i m wrong.. i will like to learn something new which i dont know

[Mansukhdeep Thind]

Welcome again Jay.

Jay wrote: please please i can't sleep because of this error.. please help

That sounds more like a 911 call than a java exception / error. Like Winston said, ease up, go step by step and post your doubts here. No need to say please. We will help you. Only condition is you have to show some effort first. If you get stuck, we'll help you out.

dont know the problem but installed JDK 7.0 and now i m able to run all the programs...

i guess the problem was i just downloaded javaFX 2.1 jdk... so it did not supported basic JAVA syntax.... please correct me if i m wrong.. i will like to learn something new which i dont know

It is good that you are not facing any problem after new installation. But make a habit of studying the problem first, why it happened, study the console logs, stack trace, error message etc. Try to find out patterns. It is very important to understand the why part. Don't just jump up if it works. Try to understand why it worked too. Just guessing will not help you.