java - 在 Robocode (Java) 中写入文件

Question

基本上，我试图在 Robocode 中生成一个日志文件，但我遇到了问题，因为您不能在 Robocode 中使用 try/catch(据我所知)。我做了以下事情:

public void onBattleEnded(BattleEndedEvent e) throws IOException
{
    writeToLog();
    throw new IOException();
}

和

public void writeToLog() throws IOException
{
    //Create a new RobocodeFileWriter.
    RobocodeFileWriter fileWriter = new RobocodeFileWriter("./logs/test.txt");
    for (String line : outputLog)
    {
        fileWriter.write(line);
        fileWriter.write(System.getProperty("line.seperator"));
    }
    throw new IOException();
}

并且在编译时出现以下错误:-

MyRobot.java:123: onBattleEnded(robocode.BattleEndedEvent) in ma001jh.MyRobot cannot implement onBattleEnded(robocode.BattleEndedEvent) in robocode.robotinterfaces.IBasicEvents2; overridden method does not throw java.io.IOException
    public void onBattleEnded(BattleEndedEvent e) throws IOException
                ^
1 error

Answer 1

如你所见here ，该接口(interface)不声明任何已检查的异常。所以你不能在你的实现类中添加一个。

解决这个问题的一种方法是像这样实现您的方法:

public void onBattleEnded(BattleEndedEvent e)
{
    writeToLog();   
    throw new RuntimeException(new IOException());
}

public void writeToLog()
{
    //Create a new RobocodeFileWriter.      
    RobocodeFileWriter fileWriter = new RobocodeFileWriter("./logs/test.txt");
    for (String line : outputLog)
    {
        fileWriter.write(line);
        fileWriter.write(System.getProperty("line.seperator"));
    }       
    throw new new RuntimeException(new IOException());
}