java - 当我尝试运行此代码时，它会导致 "Exception in thread "main"java.lang.ArrayIndexOutOfBoundsException : 0"this exception

Question

import javax.speech.*;
import java.util.*;// creates a default Systhesize
import javax.speech.synthesis.*; //code for text-speech engine

public class SpeechUtils
{
    String speaktext;
    public void dospeak(String speak,String voicename)
    {
        speaktext=speak;
        String voiceName =voicename;
        try
        {
            SynthesizerModeDesc desc = new
            SynthesizerModeDesc(null,"general",Locale.US,null,null);
            Synthesizer synthesizer = Central.createSynthesizer(desc);
            synthesizer.allocate();
            synthesizer.resume();
            desc = (SynthesizerModeDesc) 
            synthesizer.getEngineModeDesc();
            Voice[] voices = desc.getVoices();
            Voice voice = null;
            for (int i = 0; i < voices.length; i++)
            {
                if (voices[i].getName().equals(voiceName))
                {
                    voice = voices[i];
                    break;
                }
            }
            synthesizer.getSynthesizerProperties().setVoice(voice);
            synthesizer.speakPlainText(speaktext, null);     

            synthesizer.waitEngineState(Synthesizer.QUEUE_EMPTY);
            synthesizer.deallocate();
        }catch (Exception e)
        {
             String message = " missing speech.properties in " + System.getProperty("user.home") + "\n"; 
            System.out.println(""+e);
            System.out.println(message);}
        }

        public static void main(String[] args)
        {
            SpeechUtils obj=new SpeechUtils();
            obj.dospeak(args[0],"life is beautiful");//getting an exception here....
        }

    }

如何解决这个异常？我收到类似

的错误

"Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0
    at SpeechUtils.main(SpeechUtils.java:44)". 

这是一个Java程序或文本到语音转换。我导入了所有必需的库。但无法单独修复此异常

Answer 1

您需要在运行程序时提供运行时参数。就像在您的代码中一样，您访问第一个参数:

obj.dospeak(args[0],"life is beautiful");//getting an exception here....

如果您不提供参数，则 args 数组的索引 0 处将没有元素，因此使用 args[0] 访问它会抛出 ArrayIndexOutOfBoundsException。您需要像这样运行代码:

java SpeechUtils argument 

将参数替换为您想要输入到程序中的实际值