public static void main (String [] args) (
Long start = System.currentTimeMillis ();
long sum = 0;
for (long i = 1; i <520000l; i + +) (
sum + = i;
)
Long end = System.currentTimeMillis ();// get current system time, as far as 1970, the number of milliseconds difference 0:0:0
System.out.println ( "accumulation and:" + sum + "time-consuming:" + (end-start) + "ms");
)
Long start = System.currentTimeMillis ();
long sum = 0;
for (long i = 1; i <520000l; i + +) (
sum + = i;
)
Long end = System.currentTimeMillis ();// get current system time, as far as 1970, the number of milliseconds difference 0:0:0
System.out.println ( "accumulation and:" + sum + "time-consuming:" + (end-start) + "ms");
)