Char in Java takes up several bytes

1: "Byte" is byte, "bit" is bit;

2:1 byte = 8 bit;

Char is 2 bytes in Java. Java uses a unicode,2 byte (16-bit) to represent one character.

The example code is as follows:

public class Test {public


	static void Main (string[] args) {
		String str= ' Medium ';
		char x = ' Medium ';
		Byte[] Bytes=null;
		Byte[] Bytes1=null;
		try {
			bytes = str.getbytes ("Utf-8");
			Bytes1 = Chartobyte (x);
		} catch (Unsupportedencodingexception e) {
			//TODO auto-generated catch block
			e.printstacktrace ();
		}
		System.out.println ("bytes Size:" +bytes.length);
		System.out.println ("Bytes1 size:" +bytes1.length);
	}
	public static byte[] Chartobyte (char c) { 
        byte[] b = new byte[2]; 
        B[0] = (byte) (C & 0xff00) >> 8); 
        B[1] = (byte) (C & 0xFF); 
        return b; 
    }
}

Run Result:

Bytes Size: 3
Bytes1 Size: 2

　　

Java is used to represent characters in Unicode, and Unicode for the Chinese character "medium" is 2 bytes.

The String.getbytes (encoding) method is to get a byte array representation of the specified encoding,

Typically, the gbk/gb2312 is 2 bytes, and the Utf-8 is 3 bytes .

If encoding is not specified, the system default encoding is taken.