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Java StackTraceElement equals() method with example

StackTraceElement Class equals() method: Here, we are going to learn about the equals() method of StackTraceElement Class with its syntax and example.
Submitted by Preeti Jain, on December 24, 2019

StackTraceElement Class equals() method

• equals() method is available in java.lang package.
• equals() method is used to check whether the given object is an instance of other StackTraceElement denoting the same starting point as this instance.
• equals() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
• equals() method does not throw an exception at the time of comparing two Objects.

Syntax:

    public boolean equals(Object obj2);

Parameter(s):

• Object obj2 – represents the Object to compare with.

Return value:

The return type of this method is boolean – it returns a boolean value based on the given cases,

• It returns true when the given object is an instance of StackTraceElement denoting the same execution point.
• It returns false when the given object is not an instance of StackTraceElement denoting the same execution point.

Example:

// Java program to demonstrate the example 
// of boolean equals(Object o) method of StackTraceElement 

import java.io.*;
import java.util.*;

public class Equals {
    public static void main(String args[]) {
        // Create StackTraceElements    
        StackTraceElement ste1 = new StackTraceElement("st1", "method1", "StackTrace1.java", 2);
        StackTraceElement ste2 = new StackTraceElement("st2", "method2", "StackTrace2.java", 1);
        StackTraceElement ste3 = new StackTraceElement("st3", "method3", "StackTrace1.java", 2);

        // By using getFileName() method is to retrieve
        // the file names
        Object ob1 = ste1.getFileName();
        Object ob2 = ste2.getFileName();
        Object ob3 = ste3.getFileName();

        // It returns true when both objects are the same  
        boolean b1 = ob1.equals(ob2);
        boolean b2 = ob1.equals(ob3);

        // Display status
        System.out.println("Is ob1 and ob2 are same :" + " " + b1);
        System.out.println("Is ob1 and ob3 are same :" + " " + b2);
    }
}

Output

Is ob1 and ob2 are same : false
Is ob1 and ob3 are same : true