java中如何将byte数组内容转换为字符串？

Question

rt

Answer 1

public class ByteTest {
public static void main(String[] args) {
String str = "Hello world!";
// string转byte
byte[] bs = str.getBytes();
System.out.println(Arrays.toString(bs));

// byte转string
String str2 = new String(bs);
System.out.println(str2);
}
}

Answer 2

new String(byte[])
new String(byte[],起始下标,字节数)

Answer 3

自己查api吧，用的多了就记住了