The Class object representing the primitive type boolean.

since

JDK1.1

Allocates a Boolean object representing the value argument.

Note: It is rarely appropriate to use this constructor. Unless a new instance is required, the static factory #valueOf(boolean) is generally a better choice. It is likely to yield significantly better space and time performance.

value

the value of the Boolean.

Allocates a Boolean object representing the value true if the string argument is not null and is equal, ignoring case, to the string "true". Otherwise, allocate a Boolean object representing the value false. Examples:

new Boolean("True") produces a Boolean object that represents true.
new Boolean("yes") produces a Boolean object that represents false.

s	the string to be converted to a Boolean.

Returns the value of this Boolean object as a boolean primitive.

return

the primitive boolean value of this object.

Compares this Boolean instance with another.

b	the Boolean instance to be compared
return	zero if this object represents the same boolean value as the argument; a positive value if this object represents true and the argument represents false; and a negative value if this object represents false and the argument represents true
Throws	NullPointerException: if the argument is null
since	1.5
See also	java.lang.Comparable

Returns true if and only if the argument is not null and is a Boolean object that represents the same boolean value as this object.

obj	the object to compare with.
return	true if the Boolean objects represent the same value; false otherwise.

Returns a hash code for this Boolean object.

return

the integer 1231 if this object represents true; returns the integer 1237 if this object represents false.

Parses the string argument as a boolean. The boolean returned represents the value true if the string argument is not null and is equal, ignoring case, to the string "true".

Example: Boolean.parseBoolean("True") returns true.
Example: Boolean.parseBoolean("yes") returns false.

s	the String containing the boolean representation to be parsed
return	the boolean represented by the string argument
since	1.5

Returns a String object representing the specified boolean. If the specified boolean is true, then the string "true" will be returned, otherwise the string "false" will be returned.

b	the boolean to be converted
return	the string representation of the specified boolean
since	1.4

Returns a String object representing this Boolean's value. If this object represents the value true, a string equal to "true" is returned. Otherwise, a string equal to "false" is returned.

return

a string representation of this object.

Returns a Boolean instance representing the specified boolean value. If the specified boolean value is true, this method returns Boolean.TRUE; if it is false, this method returns Boolean.FALSE. If a new Boolean instance is not required, this method should generally be used in preference to the constructor #Boolean(boolean), as this method is likely to yield significantly better space and time performance.

b	a boolean value.
return	a Boolean instance representing b.
since	1.4

Returns a Boolean with a value represented by the specified string. The Boolean returned represents a true value if the string argument is not null and is equal, ignoring case, to the string "true".

s	a string.
return	the Boolean value represented by the string.

Returns true if and only if the system property named by the argument exists and is equal to the string "true". (Beginning with version 1.0.2 of the Java^TM platform, the test of this string is case insensitive.) A system property is accessible through getProperty, a method defined by the System class.

If there is no property with the specified name, or if the specified name is empty or null, then false is returned.

name	the system property name.
return	the boolean value of the system property.
See also	getProperty(java.lang.String), getProperty(java.lang.String, java.lang.String)