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public class PointTest {
public static void main(String[] args) {
Point p1 = new Point(1,2);
Point p2 = new Point(1,20);
java.text.DecimalFormat df = new java.text.DecimalFormat("0.00");
double d = p2.distance(p1);
System.out.println(df.format(d));

}
}


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public class testJxl {
public static void main(String[] args) throws Exception {
OutputStream out = new FileOutputStream("./aaaa.xls"); // дÈëµ½FileInputStream
WritableWorkbook wwb= Workbook.createWorkbook(out);
......

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