MathContext RoundingMode BigDecimal

import java.math.BigDecimal;
import java.math.MathContext;
import java.math.RoundingMode;

public class A {
	public static String getPow(int n,int m){
		MathContext  mc=new MathContext(m,RoundingMode.HALF_UP);
		BigDecimal b=new BigDecimal(n,mc);
		
		return	 (b.pow(m)).toString();
	

}
	public static void main(String[] args){
		
		System.out.println(getPow(2,1000));
	}
}