[java] Get ASCII value at input word

I have a character:

 char ch='A'

Give me method which converts char to ASCII
or way which returns a ASCII NUMBER.

Output : 65

simply do

int a = ch

(also this has nothing to do with android)

char a='a';
char A='A';
System.out.println((int)a +" "+(int)A);

Output:
97 65

There is a major gotcha associated with getting an ASCII code of a char value.

In the proper sense, it can't be done.

It's because char has a range of 65535 whereas ASCII is restricted to 128. There is a huge amount of characters that have no ASCII representation at all.

The proper way would be to use a Unicode code point which is the standard numerical equivalent of a character in the Java universe.

Thankfully, Unicode is a complete superset of ASCII. That means Unicode numbers for Latin characters are equal to their ASCII counterparts. For example, A in Unicode is U+0041 or 65 in decimal. In contrast, ASCII has no mapping for 99% of char-s. Long story short:

char ch = 'A';
int cp = String.valueOf(ch).codePointAt(0);

Furthermore, a 16-bit primitive char actually represents a code unit, not a character and is thus restricted to Basic Multilingual Plane, for historical reasons. Entities beyond it require Character objects which deal away with the fixed bit-length limitation.

char (with a lower-case c) is a numeric type. It already holds the ascii value of the char. Just cast it to an integer to display it as a numeric value rather than a textual value:

System.out.println("char " + ch + " has the following value : " + (int) ch);

A char is actually a numeric datatype - you can add one to an int, for example. It's an unsigned short (16 bits). In that regard you can just cast the output to, say, an int to get the numeric value.

However you need to think a little more about what it is you're asking - not all characters are ASCII values. What output do you expect for â, for example, or ??

Moreover, why do you want this? In this day and age you ought to be thinking about Unicode, not ASCII. If you let people know what your goal is, and how you intend to use this returned value, we can almost certainly let you know of a better way to achieve it.