Usage of boolean in java

The boolean type in Java represents a Boolean value, that is, true or false. Usage: Declare Boolean variables: boolean Assign true or false: = true/false Operators: && (logical AND), || (logical OR), ! (Logical NOT) Boolean expressions are used for conditional judgment and loop control. The ternary operator selects between two values based on the Boolean value. The Boolean array can store multiple Boolean values. Boolean wrapper class can convert Boolean values into objects

The use of boolean type in Java

What is the boolean type?

The boolean type is a basic data type in Java that represents a Boolean value, which istrueorfalse.

Usage of boolean

1. Boolean variable declaration

To declare a boolean variable, use the following syntax:

boolean myBooleanVariable;

2. Boolean value assignment

You can use Boolean value true (true) or false (false) to assign a value to a boolean variable ：

myBooleanVariable = true; myBooleanVariable = false;

3. Boolean operators

The boolean type supports the following operators:

• Logical AND (&&):If both operands are true, the result is true; otherwise, it is false.
• Logical OR (||):If one of the two operands is true, the result is true; otherwise, it is false.
• Logical NOT (!):Invert the Boolean value of the operand.

4. Boolean expression

boolean variables and operators can be combined to form Boolean expressions for conditional judgment and loop control:

if (myBooleanVariable == true) { // ... }

5. Ternary operator

The ternary operator can choose between two values based on the value of a Boolean expression:

String result = myBooleanVariable ? "真" : "假";

6. Boolean array

You can declare a Boolean array to store multiple Boolean values:

boolean[] myBooleanArray = new boolean[5]; myBooleanArray[0] = true;

7. Boolean wrapper class

Java also provides aBooleanwrapper class, which can convert boolean values into objects. This is useful in certain situations, such as when you need to pass a boolean value to a method that accepts anObjectobject.

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