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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
	{
	double x;
	x=20;
	System.out.println("valor de x "+x);
	if(x>0)&&(x<10);{
	System.out.println("numero de 1 cifra");}
	else{
	if(x>=10)&&(x<100);{
	System.out.println("numero de 2 cifras");}
	else{
	if(x>=100)&&(x<1000);{
	System.out.println("numero de 3 cifras");}
	else{
	(x>=1000)&&(x<10000);{
	System.out.println("numero de 4 cifras");}
	}
	}
	}
		// your code goes here
	}
}

Main.java:15: error: illegal start of expression
	if(x>0)&&(x<10);{
	       ^
Main.java:18: error: illegal start of expression
	if(x>=10)&&(x<100);{
	         ^
Main.java:21: error: illegal start of expression
	if(x>=100)&&(x<1000);{
	          ^
Main.java:24: error: not a statement
	(x>=1000)&&(x<10000);{
	         ^
Main.java:23: error: 'else' without 'if'
	else{
	^
Main.java:20: error: 'else' without 'if'
	else{
	^
Main.java:17: error: 'else' without 'if'
	else{
	^
7 errors

Standard output is empty