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class demo
{
public static void main(String args[])throws IoException;
{
int n =Integer.parseInt(args[0]);
assert n>0:"no is -ve";
System.out.println("no is +");
}
}

Main.java:3: error: cannot find symbol
public static void main(String args[])throws IoException;
                                             ^
  symbol:   class IoException
  location: class demo
Main.java:3: error: missing method body, or declare abstract
public static void main(String args[])throws IoException;
                   ^
Main.java:5: error: cannot find symbol
int n =Integer.parseInt(args[0]);
                        ^
  symbol:   variable args
  location: class demo
3 errors

Standard output is empty