Java 将文件内容作为输入读取到控制台

我试图读取一个文件，然后获取该文件的内容，并将其作为用户输入执行。我使用扫描仪读取文件和用户输入，但我不确定这是否是正确的方法，因为用于输入的扫描仪只能在System.in中运行，因此我不确定如何将数据从文件传递到输入扫描仪，以便在控制台中执行。下面是我阅读课的代码

public class readingFile {

Scanner fileReading = new Scanner(new File("somecontent.txt"));
Scanner input = new Scanner(System.in);

public readingFile() throws FileNotFoundException {
}

public void startReading()
{
    System.out.println("reading file...");
    while(fileReading.hasNextLine()){
        String data = fileReading.nextLine();
        System.out.println(data);
        Scanner input = new Scanner(System.in);
    }
}

---

试试这个。我刚刚在eclipse中创建了这个程序，它运行良好。谢谢，谢谢你的帮助。我尝试了你的代码，但我只能打印文件的内容。我希望将文件中的内容作为用户inputOk传递到控制台，感谢您澄清需求。这个新程序将从文件系统读取java文件，并执行和显示输出。如果有任何问题，请尽量让我知道。谢谢。这是我用这段代码执行的java程序：公共类程序{publicstaticvoidmain（String[]args）{System.out.println（“helloworld！！”）；}}}}好的，谢谢你澄清了需求。这个程序将从文件系统中读取java文件并执行，然后显示输出。如果有任何问题，请尽量让我知道。谢谢。这是我执行的程序文件：公共类程序{publicstaticvoidmain（String[]args）{System.out.println（“helloworld！！”）；}

import java.io.BufferedReader;
import java.io.InputStreamReader;


public class readingFile  {
    static String javaFileFullPath = "D://myfolder/Program.java";

    public static void main(String[] args) {
        executeJavaFile();
    }

    public static void executeJavaFile() {
        try {
            System.out.println("executing java program from file....");

            Process compileProcess = Runtime.getRuntime().exec("cmd /c  javac "+javaFileFullPath);
            Thread.sleep(5000);

            System.out.println(compileProcess.exitValue());
            BufferedReader inputReader = new BufferedReader(new InputStreamReader(compileProcess.getInputStream()));
            String line = "";
            while ((line = inputReader.readLine()) != null) {
                System.out.println(line);
            }
            inputReader.close();


            Process runProcess = Runtime.getRuntime().exec("cmd /c  java "+javaFileFullPath);
            Thread.sleep(5000);
            System.out.println(runProcess.exitValue());
            BufferedReader inReader = new BufferedReader(new InputStreamReader(runProcess.getInputStream()));
            String lineStr = "";
            while ((lineStr = inReader.readLine()) != null) {
                System.out.println(lineStr);
            }
            inReader.close();

        } catch (Exception ex) {
            System.out.println("Exception:"+ex.getMessage());   
        }
    }
}

import java.io.BufferedReader;
import java.io.InputStreamReader;


public class readingFile  {
    static String javaFileFullPath = "D://myfolder/Program.java";

    public static void main(String[] args) {
        executeJavaFile();
    }

    public static void executeJavaFile() {
        try {
            System.out.println("executing java program from file....");

            Process compileProcess = Runtime.getRuntime().exec("cmd /c  javac "+javaFileFullPath);
            Thread.sleep(5000);

            System.out.println(compileProcess.exitValue());
            BufferedReader inputReader = new BufferedReader(new InputStreamReader(compileProcess.getInputStream()));
            String line = "";
            while ((line = inputReader.readLine()) != null) {
                System.out.println(line);
            }
            inputReader.close();


            Process runProcess = Runtime.getRuntime().exec("cmd /c  java "+javaFileFullPath);
            Thread.sleep(5000);
            System.out.println(runProcess.exitValue());
            BufferedReader inReader = new BufferedReader(new InputStreamReader(runProcess.getInputStream()));
            String lineStr = "";
            while ((lineStr = inReader.readLine()) != null) {
                System.out.println(lineStr);
            }
            inReader.close();

        } catch (Exception ex) {
            System.out.println("Exception:"+ex.getMessage());   
        }
    }
}