java 讀取properties文件的幾種方式

//方式一
InputStream in = new BufferedInputStream(new FileInputStream("文件路徑名"));
Properties p = new Properties();
p.load(in);
System.out.println(p.getProperty("version"));
//方式二
InputStream ins = PropertiesUtil.class.getResourceAsStream("文件路徑名");
Properties ps = new Properties();
ps.load(ins);
System.out.println(ps.getProperty("version"));
//方式三
InputStream inss = PropertiesUtil.class.getClassLoader().getResourceAsStream("文件名");
Properties pss = new Properties();
pss.load(inss);
System.out.println(pss.getProperty("version"));
//方式四
InputStream insss = ClassLoader.getSystemResourceAsStream("文件名");
Properties psss = new Properties();
psss.load(insss);
System.out.println(pss.getProperty("version"));
//方式五
ResourceBundle rb = ResourceBundle.getBundle("文件名前綴", Locale.getDefault());
System.out.println(rb.getObject("version"));
//方式六
InputStream is = new BufferedInputStream(new FileInputStream("文件名前綴"));
ResourceBundle rbs = new PropertyResourceBundle(is);
System.out.println(rbs.getObject("version"));