maximum.java

用JAVA语言编写一个求三个浮点数当中最大值的程序

import java.io.*;
public class Maximum{
   public static void main(String args[]){
      double value1,value2,value3;
      System.out.println("请输入3个浮点数(请以回车键结束一个数的输入):");
      try {
             BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
             String inputLine1 = in.readLine();
             value1 = Double.valueOf(inputLine1).doubleValue();
             String inputLine2 = in.readLine();
             value2 = Double.valueOf(inputLine2).doubleValue();
             String inputLine3 = in.readLine();
             value3 = Double.valueOf(inputLine3).doubleValue();
             }catch (Exception exc){
              System.out.println("用户输入不是合法的浮点数!");
              return;
             }
       double max;
       if (value1 > value2){
          if(value1 > value3)max = value1;
           else max = value3;
          }
       else{
           if(value2 > value3)max = value2;
           else max = value3;
           }
       System.out.println("最大值为"+max+"。");
    }
}