What's wrong with my code?? (it said cannot resolve symbol)

Here is my code:

Quote:

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import java.util.*;

public class Coin {

public static void main(String[] args) {

Scanner input = new Scanner(System.in);

System.out.println("How many times you want to flip?");

int time=input.nextInt();

int array[]=new int[time];

int showtime[]=new int[10];

int head=0,tail=0,most=0;

String output="";

System.out.println("Generate: ");

for (int x=0;x<time;x++) {

int a=(int) (Math.random()*10+1);

System.out.print(a+" , ");

array[x]=a;

showtime[a-1]++;

if (a%2==0) head++;

else tail++;

}

System.out.println();

for (int x=0;x<10;x++) {

System.out.println("No. \""+(x+1)+"\" showed "+showtime[x]+" time(s)");

if (showtime[x]>showtime[most]) {

most=x;

output="The number(s) that showed up the most: "+(x+1);

}
else if (showtime[x]==showtime[most])

output=output+" , "+(x+1);

}

System.out.println(output);

if (head>tail) System.out.println("Heads came up the most");

else if (head==tail) System.out.println("Heads=Tails");

else System.out.println("Tails came up the most");

}

}

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What's wrong with my code??

I just tested out the code using eclipse, and everything works fine for me! Check to see if there are any comments using strange symbols. Other than that, the code you posted is solid and works fine!

Please post the full text of the error message.

Attachment 1272

Here is the error message.

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Why can't it find the Scanner class?

Try adding

import java.util.Scanner;

Quote:

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Originally Posted by javapenguin

Why can't it find the Scanner class?

Try adding

import java.util.Scanner;

---

He has

Code java:

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 import java.util.*;

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though, and that should cover it.

:-??:-??:-??:-??

It compiles for me as is.

Try adding import java.util.Scanner; anyway. If the Scanner class cannot be found for some reason, it will throw an error at the import statement. If that does happen, this is a problem with your environment.

The OP has not said what is wrong with his code. What symbol is the problem?
Don't we need that to be able to make suggestions?

It is still not working. It said that cannot resolve the scanner class....:(

Please copy full text of error message and paste it here. Here is a sample:

Code :

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TestSorts.java:138: cannot find symbol
symbol  : variable var
location: class TestSorts
         var = 2;
         ^

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When I add "import java.util.Scanner;" it creates another error.... saying error on the Scanner class.....

Please post the full text of the compiler's error message.

My error:

Code :

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flip.java:7: cannot resolve symbol
symbol  : class Scanner
location: class flip
                Scanner input=new Scanner(System.in);
                ^
flip.java:7: cannot resolve symbol
symbol  : class Scanner
location: class flip
                Scanner input=new Scanner(System.in);
                                  ^
2 errors

---

What version of the JDK are you using? The Scanner class came with version 1.5

mine is 1.4.2. So what can I do??

Either rewrite the code to use classes available in version 1.4
or download and install a newer version of the JDK.

I think some syntax problem can you send me complete coding which are using in your program.

@programmingtutorials The code as posted compiles with JDKs 1.5 and later.
To see the OPs problem, try compiling the posted code with JDK 1.4

so, what can I do to replace the Scanner class in my 1.4.2 version?? How do I do it??

Start with System.in. Find a wrapper class to wrap it and that can be wrapped in the BufferedReader class.

Is there any examples?? Like how do I start? I forgot how to do a wrapper class:P

Something like this:
BuffferedReader br = new BufferedReader(new WrapperClass(System.in));

You need to read the API doc to find what is the correct class for WrapperClass.