Teachnique
      CourseRoadmaps
      Login

      OverviewHistoryFeaturesJava 8 - New Featuresvs C++Virtual Machine(JVM)JDK vs JRE vs JVMHello World ProgramEnvironment SetupBasic SyntaxVariable TypesData TypesType CastingUnicode SystemBasic OperatorsCommentsStreamsNew Date-Time API

      Loop ControlDecision Makingif-else Statementswitch statementfor loopfor each Loopwhile Loopdo...while Loopbreak Statementcontinue Statement

      OOPs (Object-Oriented Programming) ConceptsObject and ClassesClass AttributesClass MethodsMethodsVariable ScopesConstructorsAccess ModifiersInheritanceAggregationPolymorphismOverridingMethod OverloadingDynamic BindingStatic BindingInstance Initializer BlockAbstractionEncapsulationInterfacesPackagesInner classesStatic ClassesAnonymous ClassesSingleton ClassWrapper ClassesEnum Class

      Number ClassBoolean classCharacter ClassArraysMath Class

      File ClassCreating FilesWrite To FilesReading FileDelete FilesDirectory OperationsFiles and I/O

      ExceptionsTry Catch BlockTry with ResourcesMultiple Catch BlocksNested Try BlockFinally BlockThrows and Throw | Throw an ExceptionException PropagationBuilt-in ExceptionsCustom Exception

      MultithreadingThread Life CycleCreating a ThreadStarting a ThreadJoining ThreadsNaming a Thread with ExamplesScheduling Threads with ExamplesThread PoolsMain ThreadThread PriorityDaemon ThreadThreadGroup ClassJVM Shutdown Hook

      Thread SynchronizationBlock SynchronizationStatic SynchronizationInter Thread CommunicationThread DeadlockInterrupting ThreadThread ControlReentrant Monitor

      NetworkingSocket ProgrammingURL ProcessingURL ClassURLConnection ClassHttpURLConnection ClassSocket Class with ExamplesGenerics

      Collections FrameworkCollection Interface

      List InterfaceArrayList Class

      Queue InterfaceArrayDeque Class

      Map InterfaceSortedMap Interface

      Set InterfaceSortedSet Interface

      Data Structures Enumeration Interface BitSet Class

      How to Use Iterator?How to Use Comparator?How to Use Comparable?

      RecursionRegular ExpressionsSerializationString ClassJava Arrays - Class

      Feedback

      Submit request if you have any questions.

      Course
      Boolean class

      Java Tutorial

      This Java tutorial is tailored for newcomers, offering a journey from basic principles to complex Java programming techniques. Completing this tutorial equips you with a solid understanding of Java, preparing you for advanced learning. You'll emerge ready to tackle the challenges of becoming a top-tier software engineer, with the skills to innovate and excel in the vast world of software development.

      Boolean Class

      Java Boolean Class

      The Java Boolean class wraps a value of the primitive type boolean in an object. An object of type Boolean contains a single field whose type is boolean.

      Boolean Class Declaration in Java

      Following is the declaration for java.lang.Boolean class 
      public final class Boolean
         extends Object
            implements Serializable, Comparable<Boolean>

      Boolean Class Fields

      Following are the fields for java.lang.Boolean class
      • static Boolean FALSE − This is the Boolean object corresponding to the primitive value false.
      • static Boolean TRUE − This is the Boolean object corresponding to the primitive value true.
      • static Class<Boolean> TYPE − This is the Class object representing the primitive type boolean.

      Boolean Class Constructors

      Sr.No.
      Constructor & Description
      1
      Boolean(boolean value)
      This allocates a Boolean object representing the value argument.
      2
      Boolean(String s)
      This allocates a Boolean object representing the value true if the string argument is not null and is equal, ignoring case, to the string "true".

      Boolean Class Methods

      Sr.No.
      Method & Description
      1
      boolean booleanValue()
      This method returns the value of this Boolean object as a boolean primitive.
      2
      int compareTo(Boolean b)
      This method compares this Boolean instance with another.
      3
      boolean equals(Object obj)
      This method 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.
      4
      static boolean getBoolean(String name)
      This method returns true if and only if the system property named by the argument exists and is equal to the string "true".
      5
      int hashCode()
      This method returns a hash code for this Boolean object.
      6
      int hashCode(boolean value)
      This method returns a hash code for a given boolean value. It is compatible with Boolean.hashCode().
      7
      static boolean logicalAnd(boolean a, boolean b)
      This method returns the result of applying the logical AND operator to the specified boolean operands.
      8
      static boolean logicalOr(boolean a, boolean b)
      This method returns the result of applying the logical OR operator to the specified boolean operands.
      9
      static boolean logicalXor(boolean a, boolean b)
      This method returns the result of applying the logical XOR operator to the specified boolean operands.
      10
      static boolean parseBoolean(String s)
      This method parses the string argument as a boolean.
      11
      String toString()
      This method returns a String object representing this Boolean's value.
      12
      static String toString(boolean b)
      This method returns a String object representing the specified boolean.
      13
      static Boolean valueOf(boolean b)
      This method returns a Boolean instance representing the specified boolean value.
      14
      static Boolean valueOf(String s)
      This method returns a Boolean with a value represented by the specified string.

      Methods Inherited

      This class inherits methods from the following classes
      • java.lang.Object

      Example of Java Boolean Class

      The following example shows the usage of some important methods provided by Boolean class.
      package com.tutorialspoint;
      public class BooleanDemo {
         public static void main(String[] args) {
      
            // create 2 Boolean objects b1, b2
            Boolean b1, b2;
      
            // assign values to b1, b2
            b1 = Boolean.valueOf(true);
            b2 = Boolean.valueOf(false);
      
            // create an int res
            int res;
      
            // compare b1 with b2
            res = b1.compareTo(b2);
      
            String str1 = "Both values are equal ";
            String str2 = "Object value is true";
            String str3 = "Argument value is true";
            if( res == 0 ) {
            	System.out.println( str1 );
            } else if( res > 0 ) {
               System.out.println( str2 );
            } else if( res < 0 ) {
               System.out.println( str3 );
            }
         }
      }

      Output

      Let us compile and run the above program, this will produce the following result 
      Object value is true