17:I[96247,["60901","static/chunks/a93b707c-e0d4e3ec9b5d0d40.js","90939","static/chunks/c6b276f6-8f45a7d62a1c123d.js","1921","static/chunks/79812939-293f59e6857c36ee.js","34726","static/chunks/8777d6a5-1ee38c8cc2861f8c.js","73222","static/chunks/73222-2df06011cda90776.js","80785","static/chunks/80785-8f37fb6aaf555b83.js","31829","static/chunks/31829-17dd9b9d28a68f0c.js","63712","static/chunks/63712-c15d68eb2916c00c.js","84334","static/chunks/84334-4a1ce1deb850b764.js","52961","static/chunks/52961-45d7def6920fcdaa.js","83850","static/chunks/83850-e7890faa35dfdc0b.js","15611","static/chunks/15611-c3c51f0b96db5f8c.js","41033","static/chunks/41033-6bc8c1315d862e40.js","51182","static/chunks/51182-2ca762ae83faa0d3.js","77238","static/chunks/77238-c4ff228600e4d63a.js","41235","static/chunks/41235-4908e48da1060101.js","67740","static/chunks/67740-fdcdd8da52f234b6.js","88702","static/chunks/88702-9d76fe1af251e584.js","66651","static/chunks/66651-ce19d1885e4ab3ac.js","19864","static/chunks/19864-9fed3e3a8915e610.js","5262","static/chunks/5262-cc8a534fdbc1868f.js","51532","static/chunks/51532-676c47a4b86ad800.js","57757","static/chunks/57757-4649757957bc3e39.js","70642","static/chunks/70642-2a158e4fa61d733e.js","49290","static/chunks/49290-46a7f9b8d8386607.js","14116","static/chunks/14116-d3c977541677000d.js","22250","static/chunks/app/(free)/%5Bcategory-slug%5D/%5Barticle-slug%5D/page-a09a31f66b5a030e.js"],"default"] 19:I[18185,[],"IconMark"] 18:Tae2,

Introduction

In Java, throw and throws are two different concepts used in exception handling. Although they sound similar, their purposes are different.

throws is used to declare exceptions that may occur during the execution of a method.

throw is used within a method or block of code to explicitly throw a single exception.

Java throws Keyword

The throws keyword is used in a method declaration to specify the exceptions that a method might throw. It helps propagate exceptions to the caller, without forcing the method itself to handle them.

Syntax

accessModifier returnType methodName() throws ExceptionType1, ExceptionType2 {
    // method code
}

Example

import java.io.*;

class Example {
    static void writeToFile() throws IOException {
        FileWriter fw = new FileWriter("output.txt");
        fw.write("Hello World");
        fw.close();
    }

    public static void main(String[] args) {
        try {
            writeToFile();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

In this example:

The method writeToFile declares throws IOException.

The main method calls it and handles the exception using try-catch.

Java throw Keyword

The throw keyword is used inside a method or block of code to explicitly throw a single exception. We can throw both checked and unchecked exceptions using throw.

Syntax

throw throwableObject;

Example: Unchecked Exception

class ThrowExample {
    public static void main(String[] args) {
        int age = 15;
        if (age < 18) {
            throw new ArithmeticException("You must be at least 18 years old");
        } else {
            System.out.println("Welcome!");
        }
    }
}

Example: Checked Exception

import java.io.*;

class CheckedThrowExample {
    public static void main(String[] args) throws IOException {
        File file = new File("nonexistent.txt");
        FileReader fr = new FileReader(file); // throws FileNotFoundException
    }
}

Conclusion

throw is used inside a method/constructor to explicitly throw a single exception.

throws is used in the method/constructor signature to declare multiple e