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Chapter 25 The java.lang Package |
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Chapter 25 The java.lang Package |
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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
}
Boolean.valueOf()
Boolean.FALSE, Boolean.TRUE
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| java.lang.ArrayStoreException (JDK 1.0) |  |
java.lang.Byte (JDK 1.1) |
