Answer / jagdish patel

#include<stdio.h>
#include<conio.h>
void main()
{
char character;

character=getch();

if(isalpha(character))
printf("alpha");

else if(isdigit(character))
printf("digit");
else
printf("pressed key is special key");
getch();
}

could you please tell me for what javac, javax,swing,awt.*; are using. what is the meaning and differences. and also there are 4 access modifiers in java. public, private, protected, default. what is the meaning of these 4 access modifiers and difference. public is the access modifier void means return data type disp() means function name what mean by static

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