Simple Bitwise Role

SimpleBitwiseEdit.java

/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class SimpleBitwiseEdit
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		int read = 1;
		int add = 2;
		int edit = 4;
		int submit = 8;
		
		int roleA = (read);
		int roleB = (read | add);
		int roleC = (read | edit);
		int roleD = (read | edit | add);
		
		System.out.println("roleA = "+roleA);
		System.out.println("roleB = "+roleB);
		System.out.println("roleC = "+roleC);
		System.out.println("roleD = "+roleD);
		
		System.out.println("\n test role bitwise");
		int test = (roleC & edit);
		System.out.println("test = "+test);
	}
}

SimpleBitwiseRole.java

/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
public class SimpleBitwiseRole
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		int read = 1;
		int add = 2;
		int edit = 4;
		int submit = 8;
		
		int roleA = (read);
		int roleB = (roleA | add); //read add 
		int roleC = (roleB | edit) ; //read add edit
		int roleD = (roleC & (~edit)); //read add
		int roleF = (roleC & (~add));  //read edit
		
		System.out.println("roleA = "+roleA);
		System.out.println("roleB = "+roleB);
		System.out.println("roleC = "+roleC);
		System.out.println("roleD = "+roleD);
		System.out.println("roleF = "+roleF);
		
		System.out.println("test role bitwise");
		int test = (roleF & add);
		System.out.println("test = "+test);
		
		
	}
}

http://www.php4every1.com/tutorials/create-permissions-using-bitwise-operators-in-php/

belajar bitwise untuk simple ACL