Java Boolean Class

The Boolean class in Java is a wrapper class for the primitive data type boolean. It provides utility methods and allows you to use boolean values in contexts where an object is required, such as in collections and generics.

In this tutorial, we will go through examples of using the Boolean class.

Creating Boolean objects:

You can create Boolean objects using the constructor or the valueOf method:

Boolean bool1 = new Boolean(true);
Boolean bool2 = new Boolean("true"); // The string "true" is case-insensitive
Boolean bool3 = Boolean.valueOf(false);
Boolean bool4 = Boolean.valueOf("TruE"); // The string "true" is case-insensitive

Comparing Boolean objects:

To compare two Boolean objects, you can use the equals method:

Boolean bool1 = new Boolean(true);
Boolean bool2 = new Boolean(false);

System.out.println(bool1.equals(bool2)); // Output: false

Converting Boolean objects to primitive booleans:

To convert a Boolean object to a primitive boolean, you can use the booleanValue method:

Boolean boolObj = new Boolean(true);
boolean boolPrimitive = boolObj.booleanValue();

Converting strings to booleans:

The Boolean class provides methods to parse a string and convert it to a boolean or Boolean value:

String boolString = "true";

// Parsing to a primitive boolean
boolean boolPrimitive = Boolean.parseBoolean(boolString); // The string "true" is case-insensitive

// Parsing to a Boolean object
Boolean boolObj = Boolean.valueOf(boolString); // The string "true" is case-insensitive

Converting booleans to strings:

You can convert a boolean or Boolean value to a string using the toString method:

boolean boolPrimitive = true;
Boolean boolObj = new Boolean(false);

String boolPrimitiveString = Boolean.toString(boolPrimitive);
String boolObjString = boolObj.toString();

Accessing the logical values true and false:

The Boolean class provides two static final fields representing the logical values true and false:

Boolean trueValue = Boolean.TRUE;
Boolean falseValue = Boolean.FALSE;

These are the basic usages of the Boolean class in Java. Using the Boolean class, you can perform various operations on boolean values and use them in object-oriented contexts.

Creating Boolean Objects in Java: The Boolean class is used to create Boolean objects.
```
Boolean boolObj = new Boolean(true);
```
Boolean Class vs. boolean Primitive Type in Java: Understand the difference between the Boolean class and the boolean primitive type.
```
boolean primitiveBool = true;
Boolean objectBool = Boolean.valueOf(true);
```
Java Boolean Class Methods and Constructors: Explore methods and constructors provided by the Boolean class.
```
Boolean boolObj1 = new Boolean(true);
Boolean boolObj2 = Boolean.valueOf("true");
```

Converting Boolean to boolean in Java: Convert a Boolean object to a boolean primitive type.

Boolean boolObj = Boolean.valueOf(true);
boolean primitiveBool = boolObj.booleanValue();

Parsing Boolean Values in Java: Parse a string to obtain a Boolean value.

String boolStr = "true";
Boolean boolObj = Boolean.parseBoolean(boolStr);

Java Boolean Class and Null Values: Boolean objects can be null, unlike the primitive boolean type.
```
Boolean boolObj = null;
```

Comparing Boolean Objects in Java: Compare Boolean objects for equality.

Boolean boolObj1 = Boolean.valueOf(true);
Boolean boolObj2 = Boolean.valueOf(true);
boolean areEqual = boolObj1.equals(boolObj2);

Java Boolean Class and Logical Operators: Use logical operators with Boolean objects.

Boolean boolObj1 = Boolean.valueOf(true);
Boolean boolObj2 = Boolean.valueOf(false);
Boolean result = boolObj1 && boolObj2;

Boolean.valueOf() Method in Java: The valueOf method returns a Boolean object representing the specified boolean value.
```
boolean boolPrimitive = true;
Boolean boolObj = Boolean.valueOf(boolPrimitive);
```
Java Boolean Class and Autoboxing: Automatic conversion between boolean and Boolean is known as autoboxing.
```
boolean boolPrimitive = true;
Boolean boolObj = boolPrimitive;
```
Using Boolean as a Parameter in Java Methods: Boolean can be used as a parameter in Java methods.
```
public void processBoolean(Boolean boolObj) {
    // Process Boolean object
}
```

Java Boolean Class and Conditional Statements: Use Boolean objects in conditional statements.

Boolean boolObj = Boolean.valueOf(true);
if (boolObj) {
    // Execute when the condition is true
}

Boolean Class and Bitwise Operations in Java: Bitwise operations are not applicable to Boolean objects.
```
// This will result in a compilation error
Boolean result = boolObj1 & boolObj2;
```
Java Boolean Class and String Representation: Obtain a string representation of a Boolean object.
```
Boolean boolObj = Boolean.valueOf(true);
String strRepresentation = boolObj.toString();
```

Java Boolean Class and Hash Code: Get the hash code of a Boolean object.

Boolean boolObj = Boolean.valueOf(true);
int hashCode = boolObj.hashCode();

Common Use Cases for the Boolean Class in Java: Use the Boolean class for scenarios requiring a Boolean object.
```
Boolean boolObj = someCondition ? Boolean.TRUE : Boolean.FALSE;
```
Common Pitfalls with the Java Boolean Class: Be aware of potential pitfalls, such as unintentional null values.
```
Boolean boolObj = null; // Potential NullPointerException
```