Sep 23, 2013 · Since boolean values are restricted to either true or false, it's uncommon to see them used in Collections or Generics; generally speaking, if you'd have a boolean as a value, you'll just use Collection#contains instead.

A Boolean expression returns a boolean value: true or false. This is useful to build logic, and find answers. For example, you can use a comparison operator , such as the greater than ( > ) operator, to find out if an expression (or a variable) is true or false:

Sep 16, 2010 · You can use the Boolean constants - Boolean.TRUE and Boolean.FALSE instead of 0 and 1. You can create your variable as of type boolean if primitive is what you are after. This way you won't have to create new Boolean objects.

Mar 17, 2012 · When the first character of the sourceText string is capital, the boolean upperCase is true. I want the first character of translatedTextString to be capital if the first character of the sourceText string is capital.

Jul 10, 2020 · The Boolean data type is capitalized when we talk about it. This is because it was named after the mathematician George Boole, who played a key role in the fields of logic and algebra. However, when you are declaring a boolean, you should use lowercase. In Java, booleans are declared using the boolean keyword.

The boolean keyword in Java is a primitive data type that can hold only two possible values: true or false. It is used to represent simple flags that track true/false conditions, and it is the basis for all conditional operations in Java.

Apr 24, 2025 · In Java Programming, we can be able to capitalize the first letter of each word in the given String value by using toUpperCase(), toLowerCase(), and another one is substring() method. These methods are available String class in Java and these methods are useful for our problem. In this article, we w

Dec 19, 2024 · In Java, booleans represent a type of data that can hold one of two possible values: true or false. These values are primarily used for decision-making in conditional statements and logical operations.

We focused on the boolean data type and its ability to represent binary values. We also covered how we can declare and initialize boolean variables, used comparison operators to form boolean expressions, and leveraged conditional statements for more elaborate program flow control.

In this Java Tutorial, we explored the boolean data type. We learned how to declare, initialize, and update a boolean variable; observed its default value; printed it to the console; used it in conditional statements; and performed logical operations.