appconfig.java

是一个java写的 可以输入要下的歌名

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package mymp3;

import java.io.File;
import javax.swing.JOptionPane;

/**
 *
 * @author huliqing
 */
public class AppConfig {
    private static AppConfig instance = new AppConfig();
    private String savePath;
    
    private AppConfig() {}
    public static AppConfig getInstance() {
        return instance;
    }

    public void setSavePath(String path) {
        this.savePath = path;
    }
    
    public String getSavePath() {
        if (savePath == null) {
            try {   // 默认在根目录的musics下存放音频文件
                File f = new File("musics");
                if (!f.exists()) {
                    f.mkdirs();
                }
                savePath = f.getAbsolutePath();
            } catch (Exception exception) {
                JOptionPane.showMessageDialog(null, "出错");
            }
        }
        return savePath;
    }
}