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1£©Java Language Specification, Third Edition (by James Gosling) 
 
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Java³ÌÐòµ÷Óô洢¹ý³ÌÓ¦ÓþÙÀý

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package com.yzy.jdbc.dao;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import oracle.jdbc.OracleTypes;
public class LoginDao {
 public boolean loginValidate(String username, Stri ......

javaËÄÉáÎåÈëBigDecimal

javaËÄÉáÎåÈë
package Test;
import java.math.BigDecimal; //ÒýÈëÕâ¸ö°ü
public class Test {
  public static void main(String[] args) {
   double i = 3.856;
   // ÉáµôСÊýÈ¡Õû
   System.out.println("ÉáµôСÊýÈ¡Õû:Math.floor(3.856)=" + (int) Math.floor(i));
......
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