Boolean Identifiers

The execution of if-else statements depends on the value of the Boolean expression. We can use boolean variables to write code that is easier to read.

For example, the boolean variable done could be used to write code that reads more like English.

Instead of

if(done == true){
    System.out.println("We are done!");
}

we can write

if(done){
    System.out.println("We are done!");
}

Programmers often use boolean variables to aid in program flow and readability. The second version is the more preferred way of using a boolean variable in this situation because it is less dangerous. If you make a mistake and only put = instead of == Java will not catch that and interprets the statement as assignment. Some strange results could occur and it can take the programmer a while to catch the error.