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5年前关门了。
改进这个问题
公共级热水器{

//public fields set to private
private double water = 1;
private double kilowatts= 2;
private double joules = 3600;
private double temp = 70;
private double jkg = 4200;
private double energy;
private double time;

//Constructor method
public WaterHeater (double water, double kilowatts, double joules, double temp, double jkg)  {
}

//Accessors and mutators
//Accessor for Water
public double getWater() {
    return water;
}
public void setWater(int water) {
    this.water = water;
}
//Accessor for Kilowatts
public double getKilowatts() {
    return kilowatts;
}
public void setKilowatts(int kilowatts) {
    this.kilowatts = kilowatts;
}
//Accessor for Temperature
public double getTemp() {
    return temp;
}
public void setTemp(int temp) {
    this.temp = temp;
}
//Method for Energy used
public double getEnergy() {
    energy = water*jkg*temp;
    return energy;
}
public void setEnergy() {
    this.energy = energy;
}
//Method for Time to boil
public double getTime() {
    time = energy/kilowatts;
    return time;
}
public void setTime() {
    this.time = time;
}

}
公营水壶热水器{

public Kettle(double water, double kilowatts, double joules, double temp, double jkg) {
    super(water, kilowatts, joules, temp, jkg);      
}

public static void main( String args[] ) 
{ 

    userInput kettleinput = new userInput();

    System.out.println("\nEnergy used: ");
    System.out.println("Time to boil: ");

}

}
公共类用户输入{

public static void main(String args[])
{
    BufferedReader in = new BufferedReader(new InputStreamReader(System.in));

    double getWater;

    // These must be initialised
    String strWater = null;
    int    intWater = 0;

    System.out.print("Enter amount of water used: ");
    System.out.flush();

    // read string value from keyboard
    try {
        strWater = in.readLine();
    } 
    catch (IOException ioe) { 
        // ignore exception
    }

    // convert it to integer
    try {
        intWater = Integer.parseInt(strWater);
    } 
    catch (NumberFormatException nfe) {
        System.out.println("Whoops: " + nfe.toString());
        System.exit(1);
    }

    double getKilowatts;

    // These must be initialised
    String strKilowatts = null;
    int    intKilowatts = 0;

    System.out.print("Enter amount of Kilowatts used: ");
    System.out.flush();

    // read string value from keyboard
    try {
        strKilowatts = in.readLine();
    } 
    catch (IOException ioe) { 
        // ignore exception
    }

    // convert it to integer
    try {
        intKilowatts = Integer.parseInt(strKilowatts);
    } 
    catch (NumberFormatException nfe) {
        System.out.println("Whoops: " + nfe.toString());
        System.exit(1);
    }

    double getTemp;

    // These must be initialised
    String strTemp = null;
    int    intTemp = 0;

    System.out.print("Enter the temperature of water raised by: ");
    System.out.flush();

    // read string value from keyboard
    try {
        strTemp = in.readLine();
    } 
    catch (IOException ioe) { 
        // ignore exception
    }

    // convert it to integer
    try {
        intTemp = Integer.parseInt(strTemp);
    } 
    catch (NumberFormatException nfe) {
        System.out.println("Whoops: " + nfe.toString());
        System.exit(1);
    }

}

}
抱歉，代码太长了。我在寻找显示用户输入结果的解决方案时遇到问题。我有在热水器中创建的方法，我想用它们来计算用户入水时消耗的能量和沸腾的时间，千瓦和温度。这些方法已经完成了，我只是找不到一个方法来使用它们。因此，当水壶类运行时，用户输入水、千瓦和温度，它将给出一个结果。任何帮助都是值得的。