java - 需要帮助读取文本文件中的 2 位数字

Question

这是我当前项目的代码。我有任何 10 或以上的数字，它会读取每个数字而不是整个数字。有什么帮助吗？我正在使用的数字:

1 3

1 1

-1 -5

5 3

45 45

1001001100 1001001100

import java.util.Scanner;
import java.io.*;
import java.io.PrintWriter;

public class comparison_rylan_howard {
    public static void main(String[] args) throws IOException {
        Scanner reader = new Scanner(new
                File("H:\\NetBeansProjects\\Unit1\\comparison.txt"));
        try (PrintWriter writer = new PrintWriter("Results.txt")) {

            while (reader.hasNext()) {
                double first = reader.nextDouble();
                double second = reader.nextDouble();
                if (first <= -1 || second <= -1) {
                    writer.println("Error");
                }
                if (first > second) {
                    writer.println(">");
                    writer.println(" ");
                }
                if (first < second) {
                    writer.println("<");
                    writer.println(" ");
                } else {
                    writer.println("=");
                    writer.println(" ");
                }
            }
        }
    }
}

Answer 1

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Scanner;

public class comparison_rylan_howard {
    public static void main(String[] args) throws IOException {
        Scanner reader = new Scanner(new
                File("H:\\NetBeansProjects\\Unit1\\comparison.txt"));
        try (PrintWriter writer = new PrintWriter("Results.txt")) {

            while (reader.hasNext()) {

                double first = reader.nextDouble();
                double second = reader.nextDouble();
                writer.println(first+","+second );
                if (first <= -1 || second <= -1) {
                    writer.println("Error");
                    writer.println("");
                }
                else if (first > second) {
                    writer.println(">");
                    writer.println("");
                }
                else if (first < second) {
                    writer.println("<");
                    writer.println("");
                } else {
                    writer.println("=");
                    writer.println("");
                }
            }
        }
    }
}

输出:

1.0,3.0
<

1.0,1.0
=

-1.0,-5.0
Error

5.0,3.0
>

45.0,45.0
=

1.0010011E9,1.0010011E9
=