如何在java中将字符从字母字符转换为十六进制数
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how to convert a char from alphabetical character to hexadecimal number in java
提问by Cooper
how to convert a char from alphabetical character to hexadecimal number in java a if any one have any built-in method in java that does the job or if you have your own method ,could you please help
如果有人在java中有任何内置方法可以完成这项工作，或者如果您有自己的方法，如何在java中将字符从字母字符转换为十六进制数，请您帮忙
i forgot and also how to convert from hex to binary
我忘了以及如何从十六进制转换为二进制
回答by Peter Lawrey
You can convert from char to hex string.
您可以将字符转换为十六进制字符串。
char ch =
String hex = String.format("%04x", (int) ch);
To read hex and convert to binary you can do
要读取十六进制并转换为二进制，您可以执行
int num = Integer.parseInt(text, 16);
String bin = Integer.toString(num, 2);
回答by Jim
回答by barti_ddu
You could use:
你可以使用：
Integer.toHexString((int) 'a');
Integer.toBinaryString((int) 'b');
Update: hex -> binary conversion:
更新：十六进制 -> 二进制转换：
Integer.toBinaryString(Integer.parseInt("fa", 16))
