Performs a logical AND on all the Boolean values and returns true if an only if all Boolean values evaluate to true, as determined by the BooleanUtils.valueOf method on the Boolean wrapper object. - Java java.lang

Java examples for java.lang:boolean

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Description

Performs a logical AND on all the Boolean values and returns true if an only if all Boolean values evaluate to true, as determined by the BooleanUtils.valueOf method on the Boolean wrapper object.

Demo Code

/*//from w  w w  .  jav a  2s.co m
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//package com.java2s;

public class Main {
    public static void main(String[] argv) throws Exception {
        boolean values = true;
        System.out.println(and(values));
    }

    /**
     * Performs a logical AND on all the Boolean values and returns true if an only if all Boolean values evaluate
     * to true, as determined by the BooleanUtils.valueOf method on the Boolean wrapper object.  If the Boolean array
     * is null, then the result of the AND operation is false.
     * 
     * @param values the array of Boolean values evaluated with the logical AND operator.
     * @return a boolean value of true if the Boolean array is not null and all Boolean wrapper object evaluate to true.
     * @see #valueOf(Boolean)
     */
    public static boolean and(final Boolean... values) {
        boolean result = (values != null); // innocent until proven guilty

        if (result) {
            for (Boolean value : values) {
                result &= valueOf(value);
                if (!result) { // short-circuit if we find a false value
                    break;
                }
            }
        }

        return result;
    }

    /**
     * Determines the primitive boolean value of the specified Boolean wrapper object.  The Boolean value is true
     * if and only if it is equal to Boolean.TRUE.  This method handles null values.
     * 
     * @param value the Boolean wrapper value to convert to a primitive boolean value.
     * @return a primitive boolean value equivalent to the value of the Boolean wrapper object.
     * @see java.lang.Boolean
     */
    public static boolean valueOf(final Boolean value) {
        return Boolean.TRUE.equals(value);
    }
}

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