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public class Test{
public static void main(String args[]){
System.out.println(0.05+0.01);
System.out.println(1.0-0.42);
System.out.println(4.015*100);
System.out.println(123.3/100);
}
};
ÄãûÓп´´í£¡½á¹ûȷʵÊÇ
0.060000000000000005
0.5800000000000001
401.49999999999994
1.2329999999999999
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Õâ¸öÎÊÌâÏ൱ÑÏÖØ£¬Èç¹ûÄãÓÐ9.999999999999Ôª£¬ÄãµÄ¼ÆËã»úÊDz»»áÈÏΪÄã¿ÉÒÔ¹ºÂò10ÔªµÄÉÌÆ·µÄ¡£
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public double round(double value){&
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package com.nffish.util;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import com.nffish.c ......