无法编译的源代码 – 错误的sym类型：java.io.File.getSampleV

import java.io.File; import java.io.FileInputStream; //import javax.swing.JFrame; public class filterpanitha { //public void graph(){ //} /** * @param args */ public static void main(String[] args) { // First, get the data from a sound file in .wav format into your program // You will have to modify the following line to point to your own file // String fileName = "C:\\Huhns\\Teaching\\CSCE145\\Code\\Noise3\\preamble.wav"; FileInputStream fileInputStream = null; File file = new File("C:\\Users\\sudharshan_03713\\Desktop\\audio\\1A5.wav"); // Next, print the sound to find out its length in samples System.out.println(file); // The following two methods calls get the value of a sound sample at // index 1000 and then set its value to half of the original. int index = 1000; int value = file.getSampleValueAt(index); file.setSampleValueAt(index, value / 2); // The following loop sets every sound sample to be twice its original value for (int n = 0; n < file.getNumSamples(); n++) { value = file.getSampleValueAt(n); file.setSampleValueAt(n, value * 2); } // Listen to the sound //sound1.play(); } } 

当我说它时，请帮忙

 Exception in thread "main" java.lang.RuntimeException: Uncompilable source code - Erroneous sym type: java.io.File.getSampleValueAt at Prepro.filterpanitha.main(filterpanitha.java:41) 

我不知道为什么它的pooping …是我需要查看的任何音频格式，如果是这样的话…请帮忙

Answer 1

此exceptionjava.lang.RuntimeException: Uncompilable source code使用允许您运行项目/代码的IDE时会看到无法编译的源代码，即使某些类未编译（由于代码中的错误）。 我建议修复代码，在运行项目之前没有错误。

此外， java.io.File永远不会有方法setSampleValueAt() 。 这是导致您的代码永远不会编译的原因。

Answer 2

你的错误在这一行

 int value = file.getSampleValueAt(index); 

File不提供方法getSampleValueAt 。