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/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		   System.out.println("Enter a value: ");
		   Scanner input = new Scanner(System.in);
		   double a = input.next();
		   System.out.println(a);
		   double b = nextByte();
		   System.out.println(b);
		   double c = input.nextShort();
		   System.out.println(c);
		   double d = nextLong();
		   System.out.println(d);
		   double e = input.nextFloat();
		   System.out.println(e);
		   double f = input.nextDouble();
		   System.out.println(f);
		   double g = input.nextBoolean();
		   System.out.println(g);
 
	}
}

Main.java:14: error: incompatible types: String cannot be converted to double
		   double a = input.next();
		                        ^
Main.java:16: error: cannot find symbol
		   double b = nextByte();
		              ^
  symbol:   method nextByte()
  location: class Ideone
Main.java:20: error: cannot find symbol
		   double d = nextLong();
		              ^
  symbol:   method nextLong()
  location: class Ideone
Main.java:26: error: incompatible types: boolean cannot be converted to double
		   double g = input.nextBoolean();
		                               ^
4 errors

Standard output is empty