// truth table: David I. Schwartz, 1/2000
// demonstrate boolean values and rudimentary formatting
// note that you can print a boolean expression

public class truthtable1 {
    public static void main(String args[]) {
	
	System.out.println("=============================");

	// The \t prints a TAB in output
	System.out.println("A\tB\t| AND\tOR");

	System.out.println("================+============");

	// Boolean literals: true and false
	// You can actually use the words true and false in code
	// Java will treat them as actual values you can manipulate with
	// operators like && (AND) and || (OR)

	// Use T and F identifiers to make code easier to read
	boolean T = true;
	boolean F = false;

	// Produce a truth table
	// Use operations for AND and OR for all combinations of T and F
	// You must surround boolean expressions with ()
	// Java needs to do those operations before printing

	System.out.println(T + "\t" + T + "\t| " +  (T && T) + "\t" + (T || T));
	System.out.println(T + "\t" + F + "\t| " +  (T && F) + "\t" + (T || F));
	System.out.println(F + "\t" + T + "\t| " +  (F && T) + "\t" + (F || T));
	System.out.println(F + "\t" + F + "\t| " +  (F && F) + "\t" + (F || F));

    }

}

/* Output:

=============================
A       B       | AND   OR
================+============
true    true    | true  true
true    false   | false true
false   true    | false true
false   false   | false false

*/