How many bytes do java characters occupy?

"Byte" is byte, "bit" is bit;                                                                                                                                               char is 2 bytes in Java. Java uses Unicode, 2 bytes (16 bits) to represent a character.

The example code is as follows:

 1 byte = 8 bit ；

Running result:

public class Test {  
    public static void main(String[] args) {  
        String str= "中";  
        char x ='中';  
        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 大小："+bytes.length);  
        System.out.println("bytes1大小："+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;   
    }  
}

java uses unicode Indicates characters. The unicode of the Chinese character "中" is 2 bytes.

String.getBytes(encoding) method is to obtain the byte array representation of the specified encoding. Usually gbk/gb2312 is 2 bytes and utf-8 is 3 bytes.

If encoding is not specified, the system default encoding will be used.

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