| Keywords |
Description |
| abstract | Java abstract keyword is used to declare an abstract class. An abstract class can provide the implementation of the interface. It can have abstract and non-abstract methods. |
| boolean | Java boolean keyword is used to declare a variable as a boolean type. It can hold True and False values only. |
| break | Java break keyword is used to break the loop or switch statement. It breaks the current flow of the program at specified conditions. |
| byte | Java byte keyword is used to declare a variable that can hold 8-bit data values. |
| case | Java case keyword is used with the switch statements to mark blocks of text. |
| catch | Java catch keyword is used to catch the exceptions generated by try statements. It must be used after the try block only. |
| char | Java char keyword is used to declare a variable that can hold unsigned 16-bit Unicode characters |
| class | Java class keyword is used to declare a class. |
| continue | Java continue keyword is used to continue the loop. It continues the current flow of the program and skips the remaining code at the specified condition. |
| default | Java default keyword is used to specify the default block of code in a switch statement. |
| do | Java do keyword is used in the control statement to declare a loop. It can iterate a part of the program several times. |
| double | Java double keyword is used to declare a variable that can hold 64-bit floating-point number. |
| else | Java else keyword is used to indicate the alternative branches in an if statement. |
| enum | Java enum keyword is used to define a fixed set of constants. Enum constructors are always private or default. |
| extends | Java extends keyword is used to indicate that a class is derived from another class or interface. |
| final | Java final keyword is used to indicate that a variable holds a constant value. It is used with a variable. It is used to restrict the user from updating the value of the variable. |
| finally | Java finally keyword indicates a block of code in a try-catch structure. This block is always executed whether an exception is handled or not. |
| float | Java float keyword is used to declare a variable that can hold a 32-bit floating-point number. |
| for | Java for keyword is used to start a for loop. It is used to execute a set of instructions/functions repeatedly when some condition becomes true. If the number of iteration is fixed, it is recommended to use for loop. |
| if | Java if keyword tests the condition. It executes the if block if the condition is true. |
| implements | Java implements keyword is used to implement an interface |
| import | Java import keyword makes classes and interfaces available and accessible to the current source code. |
| instanceof | Java instanceof keyword is used to test whether the object is an instance of the specified class or implements an interface. |
| int | Java int keyword is used to declare a variable that can hold a 32-bit signed integer. |
| interface | Java interface keyword is used to declare an interface. It can have only abstract methods. |
| long | Java long keyword is used to declare a variable that can hold a 64-bit integer |
| new | Java new keyword is used to create new objects. |
| null | Java null keyword is used to indicate that a reference does not refer to anything. It removes the garbage value. |
| package | Java package keyword is used to declare a Java package that includes the classes. |
| private | Java private keyword is an access modifier. It is used to indicate that a method or variable may be accessed only in the class in which it is declared. |
| protected | Java protected keyword is an access modifier. It can be accessible within the package and outside the package but through inheritance only. It can't be applied with the class. |
| public | Java public keyword is an access modifier. It is used to indicate that an item is accessible anywhere. It has the widest scope among all other modifiers. |
| return | Java return keyword is used to return from a method when its execution is complete. |
| short | Java short keyword is used to declare a variable that can hold a 16-bit integer. |
| static | Java static keyword is used to indicate that a variable or method is a class method. The static keyword in Java is mainly used for memory management. |
| strictfp | Java strictfp is used to restrict the floating-point calculations to ensure portability. |
| super | Java super keyword is a reference variable that is used to refer to parent class objects. It can be used to invoke the immediate parent class method. |
| switch | The Java switch keyword contains a switch statement that executes code based on test value. The switch statement tests the equality of a variable against multiple values. |
| synchronized | Java synchronized keyword is used to specify the critical sections or methods in multithreaded code. |
| this | Java this keyword can be used to refer the current object in a method or constructor. |
| throw | The Java throw keyword is used to explicitly throw an exception. The throw keyword is mainly used to throw custom exceptions. It is followed by an instance. |
| throws | The Java throws keyword is used to declare an exception. Checked exceptions can be propagated with throws. |
| transient | Java transient keyword is used in serialization. If you define any data member as transient, it will not be serialized. |
| try | Java try keyword is used to start a block of code that will be tested for exceptions. The try block must be followed by either catch or finally block. |
| void | Java void keyword is used to specify that a method does not have a return value. |
| volatile | Java volatile keyword is used to indicate that a variable may change asynchronously. |
| while | Java while keyword is used to start a while loop. This loop iterates a part of the program several times. If the number of iteration is not fixed, it is recommended to use the while loop. |
