﻿ Java exercises: Calculate the sum of two integers and return true if the sum is equal to a third integer - w3resource # Java Exercises: Calculate the sum of two integers and return true if the sum is equal to a third integer

## Java Basic: Exercise-52 with Solution

Write a Java program to calculate the sum of two integers and return true if the sum is equal to a third integer.

Sample Solution:

Java Code:

``````import java.util.*;
public class Exercise52 {
public static void main(String[] args)
{
Scanner in = new Scanner(System.in);
System.out.print("Input the first number : ");
int x = in.nextInt();
System.out.print("Input the second number: ");
int y = in.nextInt();
System.out.print("Input the third number : ");
int z = in.nextInt();
System.out.print("The result is: "+sumoftwo(x, y, z));
System.out.print("\n");
}

public static boolean sumoftwo(int p, int q, int r)
{
return ((p + q) == r || (q + r) == p || (r + p) == q);
}
}
```
```

Sample Output:

```Input the first number : 5
Input the second number: 10
Input the third number : 15
The result is: true
```

Pictorial Presentation: Flowchart: Java Code Editor:

What is the difficulty level of this exercise?

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## Java: Tips of the Day

Try and catch:

Java is excellent at catching errors, but it can only recover gracefully if you tell it what to do. The cascading hierarchy of attempting to perform an action in Java starts with try, falls back to catch, and ends with finally. Should the try clause fail, then catch is invoked, and in the end, there's always finally to perform some sensible action regardless of the results. Here's an example:

```try {
cmd = parser.parse(opt, args);

if(cmd.hasOption("help")) {
HelpFormatter helper = new HelpFormatter();
helper.printHelp("Hello ", opt);
System.exit(0);
}
else {
if(cmd.hasOption("shell") || cmd.hasOption("s")) {
String target = cmd.getOptionValue("tgt");
} // else
} // fi
} catch (ParseException err) {
System.out.println(err);
System.exit(1);
} //catch
finally {
new Hello().helloWorld(opt);
} //finally
} //try
```

It's a robust system that attempts to avoid irrecoverable errors or, at least, to provide you with the option to give useful feedback to the user. Use it often, and your users will thank you!

Ref: https://red.ht/3EZc9OC