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double rint(double d)

public class Test{
    public static void main(String args[]){
        double d = 100.675;
        double e = 100.500;
        double f = 100.200;

        System.out.println(Math.rint(d));
        System.out.println(Math.rint(e)); 
        System.out.println(Math.rint(f)); 
    }
}

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