需要Java帮助！！ “错误：找不到或加载主类OperatorEx32”

Question

我正在eclipse上编码Java，并收到此错误。 错误：找不到或加载主类OperatorEx32

public class OperatorEx32 {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int x,y,z;
        int absX, absY, absZ;
        char signX, signY, signZ;

        x = 10;
        y = -5;
        z = 0;

        absX = x >= 0 ? x : -x;
        absY = y >= 0 ? y : -y;
        absZ = z >= 0 ? z : -z;

        signX = x > 0 ? '+' : (x==0 ? ' ' : '-');
        signY = y > 0 ? '+' : (y==0 ? ' ' : '-');
        signZ = z > 0 ? '+' : (z==0 ? ' ': '-');

        System.out.printf("x=%c%d%n",  signX, absX);
        System.out.printf("y=%c%d%n",  signY, absY);
        System.out.printf("z=%c%d%n",  signZ, absZ);

    }

}