I want to improve the execution time of the program that requires a solution that meets the requirements

public class Main {
    public static void main(String[]args) arrows Exception {
        int n = 1;    
        while(true){
            int sum = 0;
            for(intx=n+1;x<=n*2;x++){
                inty=x*n/(x-n);
                if(Math.power(n,2)==x*y&&x<=y){
                    if(x*n%(x-n)==0){ 
                        sum = sum+1;
                        if(sum>1000){
                            break; 
                        }
                    }
                }
                n++;
            }
            System.out.println(n);
        }
    }
}