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Java in a Nutshell

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The java.lang Package

25.5 java.lang.Boolean (JDK 1.0)

This class provides an immutable object wrapper around the boolean primitive type. Note that the TRUE and FALSE constants are Boolean objects; they are not the same as the true and false boolean values. In Java 1.1, this class defines a Class constant that represents the boolean type.

booleanValue() returns the boolean value of a Boolean object. The class method getBoolean() retrieves the boolean value of a named property from the system property list. The class method valueOf() parses a string and returns the Boolean value it represents.

public final class Boolean extends Object implements Serializable {
    // Public Constructors
            public Boolean(boolean value);
            public Boolean(String s);
    // Constants
            public static final Boolean FALSE;
            public static final Boolean TRUE;
        1.1public static final Class TYPE;
    // Class Methods
            public static boolean getBoolean(String name);
            public static Boolean valueOf(String s);
    // Public Instance Methods
            public boolean booleanValue();
            public boolean equals(Object obj);  // Overrides Object
            public int hashCode();  // Overrides Object
            public String toString();  // Overrides Object

Returned By:


Type Of:

Boolean.FALSE, Boolean.TRUE

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