- Java.lang Package classes
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- Java.lang - Boolean
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- Java.lang - Double
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- Java.lang - InheritableThreadLocal
- Java.lang - Integer
- Java.lang - Long
- Java.lang - Math
- Java.lang - Number
- Java.lang - Object
- Java.lang - Package
- Java.lang - Process
- Java.lang - ProcessBuilder
- Java.lang - Runtime
- Java.lang - RuntimePermission
- Java.lang - SecurityManager
- Java.lang - Short
- Java.lang - StackTraceElement
- Java.lang - StrictMath
- Java.lang - String
- Java.lang - StringBuffer
- Java.lang - StringBuilder
- Java.lang - System
- Java.lang - Thread
- Java.lang - ThreadGroup
- Java.lang - ThreadLocal
- Java.lang - Throwable
- Java.lang - Void
- Java.lang Package extras
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Java - Boolean equals() method
Description
The Java Boolean equals(Object obj) returns true if and only if the argument is not null and is a Boolean object that represents the same boolean value as this object.
Declaration
Following is the declaration for java.lang.Boolean.equals() method
public boolean equals(Object obj)
Overrides
equals in class Object
Parameters
obj − the object to compare with
Return Value
This method returns true if the Boolean objects represent the same value, false otherwise.
Exception
NA
Example 1
The following example shows the usage of Boolean equals() method with Boolean objects.
package com.tutorialspoint; public class BooleanDemo { public static void main(String[] args) { // create 2 Boolean objects b1, b2 Boolean b1, b2; // create a boolean primitive res boolean res; // assign values to b1, b2 b1 = Boolean.valueOf(true); b2 = Boolean.valueOf(false); // assign the result of equals method on b1, b2 to res res = b1.equals(b2); String str = "b1:" +b1+ " and b2:" +b2+ " are equal is " + res; // print res value System.out.println( str ); } }
Output
Let us compile and run the above program, this will produce the following result −
b1:true and b2:false are equal is false
Example 2
The following is another example to show the usage of Boolean equals() method with a primitive value.
package com.tutorialspoint; public class BooleanDemo { public static void main(String[] args) { // create 2 Boolean objects b1, b2 Boolean b1, b2; // create a boolean primitive res boolean res; // assign values to b1, b2 b1 = Boolean.valueOf(true); b2 = false; // assign the result of equals method on b1, b2 to res res = b1.equals(b2); String str = "b1:" +b1+ " and b2:" +b2+ " are equal is " + res; // print res value System.out.println( str ); } }
Output
Let us compile and run the above program, this will produce the following result −
b1:true and b2:false are equal is false
Example 3
The following is another example to show the usage of Boolean equals() method with a null value.
package com.tutorialspoint; public class BooleanDemo { public static void main(String[] args) { // create 2 Boolean objects b1, b2 Boolean b1, b2; // create a boolean primitive res boolean res; // assign values to b1, b2 b1 = Boolean.valueOf(true); b2 = null; // assign the result of equals method on b1, b2 to res res = b1.equals(b2); String str = "b1:" +b1+ " and b2:" +b2+ " are equal is " + res; // print res value System.out.println( str ); } }
Output
Let us compile and run the above program, this will produce the following result −
b1:true and b2:null are equal is false