【java】获取当前环境属性及编码乱码示例

 package 字符编码;

 import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.OutputStream;
 import java.io.UnsupportedEncodingException;

 public class TestGetProperties {
     public static void main(String[] args) throws UnsupportedEncodingException, IOException {
         System.getProperties().list(System.out);//输出当前环境属性
         File file=new File("D:"+File.separator+"test.txt");
         OutputStream out=new FileOutputStream(file);
         out.write("黄山黄河长江长城".getBytes("UTF-8"));//无乱码
         out.write("黄山黄河长江长城".getBytes("ISO8859-1"));//有乱码
         out.close();
     }
 }