Java Keywords

The for keyword in Java is used to create a loop that repeatedly executes a block of code a specific number of times. It is commonly used for iterating over arrays and collections.

The else keyword in Java is used in conjunction with the if keyword to create conditional statements that specify an alternative block of code to execute if the if condition is false.

The if keyword in Java is used to create a conditional statement that executes a block of code only if a specified condition is true. It helps in making decisions in the code based on certain conditions.

The var keyword in Java is used to declare a local variable with inferred type. Introduced in Java 10, it allows the compiler to determine the type of the variable based on the context in which it is used.

The boolean keyword in Java is used to declare a variable that can hold one of two possible values: true or false. This data type is fundamental in controlling the flow of programs through conditional statements and logical operations.

The char keyword in Java is used to declare a variable that can hold a single 16-bit Unicode character. This data type is used to store characters and is an essential part of Java’s support for internationalization.

The long keyword in Java is used to declare a variable that can hold a 64-bit signed two’s complement integer. This data type is used when a wider range than int is needed.

The int keyword in Java is used to declare a variable that can hold a 32-bit signed two’s complement integer. This is the most commonly used integer data type, providing a good balance between range and memory usage.

The short keyword in Java is used to declare a variable that can hold a 16-bit signed two’s complement integer. This data type is useful for saving memory in large arrays where the memory savings are crucial.

The byte keyword in Java is used to declare a variable that can hold an 8-bit signed two’s complement integer. This is the smallest integer data type in Java, with a minimum value of -128 and a maximum value of 127.