Java *1.11（人口估算）美国人口调查局基于以下假设进行人口估算：

package Try;

public class AverSpeed {

	public static void main(String[] args) {		
	int sum = 312032486;
    double birth = 1.0 / 7, dead = 1.0 / 13, move = 1.0 / 45;
    int year = 365*24*60*60;
    
    int firstYear = (int)(sum + year * birth - year * dead + year * move); 
    int secondYear = (int)(firstYear + year * birth - year * dead + year * move); 
    int thirdYear = (int)(secondYear + year * birth - year * dead + year * move); 
    int fourthYear = (int)(thirdYear + year * birth - year * dead + year * move); 
    int fifthYear = (int)(fourthYear + year * birth - year * dead + year * move); 
    
    System.out.println("First year:"+firstYear);
    System.out.println("Second year:"+secondYear);
    System.out.println("Third year:"+thirdYear);
    System.out.println("Fourth year:"+fourthYear);
    System.out.println("Fifth year:"+fifthYear);
    
	}
}