如何在cmd上运行java中的2个连接类？

Question

所以我需要用java写一个程序，把2个用户输入的温度转换成华氏温度和开尔文。我写了代码，它在eclipse中工作，但我的老师严格地说它必须在cmd中工作。它编译得很好，但是当我运行它时，它会显示为could not find or load main class temperatureTester (带有main的类名)。这是我的第一篇文章，所以如果你需要更多的信息，请询问，我正在寻找任何想法，为什么会发生这种情况。下面是我对这个问题的代码。

import java.util.Scanner;
public class temperatureTester{

    public static void main (String[]args){

    //create 2 objects connecting to temperatureC
    temperatureC firstValue = new temperatureC();
    temperatureC secondValue = new temperatureC();
    // initialize scanner
    Scanner stdin = new Scanner (System.in);
    //initialize variables
    double firstC = 0;
    double secondC = 0;
    //prompt user for both values
    System.out.print("Please enter initial temperatures: ");
    firstC = stdin.nextDouble();
    secondC = stdin.nextDouble();
    //call object set methods and pass entered values as arguments
    firstValue.setC(firstC);
    secondValue.setC(secondC);
    //display the values for the values for different temp. units
    System.out.println("1) The current temperature in Celcius is: " + firstValue.getC());
    System.out.println("1) The current temperature in fahreinheit is: " + firstValue.getF());
    System.out.println("1) The current temperature in kelvin is: " + firstValue.getK());
    System.out.println("---------------------------------------------------------------");
    System.out.println("2) The current temperature in Celcius is: " + secondValue.getC());
    System.out.println("2) The current temperature in fahreinheit is: " + secondValue.getF());
    System.out.println("2) The current temperature in kelvin is: " + secondValue.getK()); 

这是第二节课

public class temperatureC{

private double C;

/**
 The setC method stores the value in the C field

 @ param initialC the value stored in C
*/

public void setC(double initialC){
    C = initialC;
}

/**
 The getC returns the C value and also sets a lower limit,
 if a number below is entered it sets it ti the limit.

 @Return the value of the C 
*/
public double getC(){

    if(C < -273.15){
        C = -273.15;
    }

    return C;
}

/**
 the getF method calculates and returns a value for C in fahrenheit

 @return the computed for C in fahrenheit 
*/
public double getF(){

    return C * 1.8 + 32;
}

/**
 The getK method computes and returns a value for temperature C in kelvin 

 @return the computed Kelvin value
*/
public double getK(){

    return C + 273.15;
}
}

Answer 1

最好的方法可能是将您的项目导出为可执行的jar文件来实现这一点，请查看下面的官方ecclipse链接http://help.eclipse.org/neon/index.jsp?topic=%2Forg.eclipse.jdt.doc.user%2Ftasks%2Ftasks-37.htm

接下来，您需要从命令行运行它，这是一个有趣的部分，只需将目录更改为jar文件所在的路径，然后就会出现以下命令

java -jar yourJar.jar
pause

然后它就会像咒语一样执行！

Answer 2

只需在cmd中使用javac编译这两个文件，在成功编译后，只需使用java运行您的主类，即temperatureTester类。它成功地执行了。

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