Java program Numeric to Roman

WRITE A JAVA PROGRAM CONVERT NUMERIC TO ROMAN

convert numeric value to roman value,numeric to roman this is good program and good logic to convert a numeric to roman

class Roman
{
int n;
void set(int x)
{
n=x;
}
void convert()
{
if (n<=0)
{
System.out.println("no roman equivalant");
}
else
{
while(n>=1000)
{
System.out.print("M");
n=n-1000;
}
if(n>=900)
{
System.out.print("CM");
n=n-900;
}
if(n>=500)
{
System.out.print("D");
n=n-500;
}
if(n>=400)
{
System.out.print("CD");
n=n-400;
}
while(n>=100)
{
System.out.print("C");
n=n-100;
}
if(n>=90)
{
System.out.print("XC");
n=n-90;
}
if(n>=50)
{
System.out.print("L");
n=n-50;
}
if(n>=40)
{
System.out.print("XL");
n=n-40;
}
while(n>=10)
{
System.out.print("X");
n=n-10;
}
if(n>=9)
{
System.out.print("IX");
n=n-9;
}
if(n>=5)
{
System.out.print("V");
n=n-5;
}
if(n>=4)
{
System.out.print("IV");
n=n-4;
}
while(n>=1)
{
System.out.print("I");
n=n-1;
}


}
}
}

class RomanDemo
{
public static void main(String[] args)
{
if (args.length!=1)
{
System.out.println("plz enter only one value");
}
else
{
int x=Integer.parseInt(args[0]);
Roman r=new Roman();
r.set(x);
r.convert();
}
}
}