Question

please help me with, Write a program in java that generates 10 random doubles, all between 1 and 11, and writes them to a text file, one number per line. Then write another program that reads the text file and displays all the doubles and their sum accurate to two decimal places. SAMPLE OUTPUT 10.6269119604172 2.737790338909455 5.427925738865128 1.3742058065472509 1.1858700262498836 4.180391276485228 4.910969998930675 5.710858234343958 7.790857007373052 3.1806714736219543 The total is 47.13

Answer 1

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.util.Random;

public class Driver{

public static void main(String args[]) throws IOException {

Random r = new Random();

BufferedWriter bw = new BufferedWriter(new FileWriter("src/data.txt"));

for(int i = 0; i < 10; i++){

double randomValue = 1 + 10 * r.nextDouble();

bw.write(String.valueOf(randomValue) + "\n");

}

bw.close();

BufferedReader b = new BufferedReader(new FileReader("src/data.txt"));

double sum = 0;

String line = "";

while((line = b.readLine()) != null){

sum += Double.parseDouble(line);

}

System.out.println(Math.round(sum * 100.0)/100.0);

}

}

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