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  1. import java.util.Scanner;
  2.  
  3. public class Try{
  4.     public static void main(String[] args){
  5.       int a;
  6.  
  7.       Scanner in = new Scanner(System.in);
  8.  
  9.       System.out.println("wpisz liczbe");
  10.       a = in.nextInt();
  11.       System.out.println("wpisales "+a);
  12.  
  13.     }
  14. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
Main.java:3: error: class Try is public, should be declared in a file named Try.java
public class Try{
       ^
1 error
stdout
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Standard output is empty
https://ideone.com/9eoaK3
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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