TransferTimes.java

import org.checkerframework.checker.index.qual.NonNegative;
import org.checkerframework.checker.index.qual.Positive;

public class TransferTimes {

    void test() {
        int a = 1;
        @Positive int b = a * 1;
        @Positive int c = 1 * a;
        @NonNegative int d = 0 * a;
        //:: error: (assignment.type.incompatible)
        @NonNegative int e = -1 * a;

        int g = -1;
        @NonNegative int h = g * 0;
        //:: error: (assignment.type.incompatible)
        @Positive int i = g * 0;
        //:: error: (assignment.type.incompatible)
        @Positive int j = g * a;

        int k = 0;
        int l = 1;
        @Positive int m = a * l;
        @NonNegative int n = k * l;
        @NonNegative int o = k * k;
    }
}
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