import java.util.Base64; 
import java.util.Base64.Decoder; 
import java.util.Base64.Encoder; 
 
public class Main { 
 
  static String src = "hello,sahadev"; 
 
  public static void main(String[] args) { 
    // 获取加密对象 
    Encoder encoder = Base64.getEncoder(); 
    // 加密 
    byte[] encode = encoder.encode(src.getBytes()); 
    // 输出加密结果 
    System.out.println("encode : " + new String(encode)); 
 
    // 获取解密对象 
    Decoder decoder = Base64.getDecoder(); 
    // 解密 
    byte[] decode = decoder.decode(encode); 
    // 输出解密结果 
    System.out.println("decode :" + new String(decode)); 
  } 
 
} 

encode : aGVsbG8sc2FoYWRldg== 
decode : hello,sahadev