Java.lang.ClassLoader.getResourceAsStream() 方法
描述
java.lang.ClassLoader.getResourceAsStream() 方法返回一个用于读取指定资源的输入流。
声明
以下是 java.lang.ClassLoader.getResourceAsStream() 方法的声明。
public InputStream getResourceAsStream(String name)
参数
name − 这是资源名称。
返回值
此方法返回用于读取资源的输入流,如果找不到资源,则返回 null。
异常
NA
示例
下面的例子展示了 java.lang.ClassLoader.getResourceAsStream() 方法的使用。
package com.tutorialspoint; import java.lang.*; import java.io.*; class ClassLoaderDemo { static String getResource(String rsc) { String val = ""; try { Class cls = Class.forName("ClassLoaderDemo"); // returns the ClassLoader object associated with this Class ClassLoader cLoader = cls.getClassLoader(); // input stream InputStream i = cLoader.getResourceAsStream(rsc); BufferedReader r = new BufferedReader(new InputStreamReader(i)); // reads each line String l; while((l = r.readLine()) != null) { val = val + l; } i.close(); } catch(Exception e) { System.out.println(e); } return val; } public static void main(String[] args) { System.out.println("File1: " + getResource("file.txt")); System.out.println("File2: " + getResource("test.txt")); } }
Assuming we have a text file file.txt, which has the following content −
This is TutorialsPoint!
Assuming we have another text file test.txt, which has the following content −
This is Java Tutorial
让我们编译并运行上面的程序,这将产生下面的结果 −
File1: This is TutorialsPoint! File2: This is Java Tutorial