Below approach is using StringBuffer there can be many other ways:

Check below code, output will be: Nearest to 0: -1

package testjava.arrays;

import java.util.Arrays;

public class ClosestZeo 
{
	public static void main(String args[])
	{
		int[] data = {-1, -5, 3, 2, 7, 4, -3, -2, -10, 2};
		
		int current = 0;
		int near = data[0];
		
		Arrays.sort(data);
		
		for(int i = 0; i < data.length; i++)
		{
			current = data[i] * data[i];
			
			if(current <= (near * near))
			{
				near = data[i];
			}
		}
		System.out.println("Nearest to 0: "+near);
	}
}

In below code ArithmeticException is a class which extends RuntimeException and RuntimeException is a class which extends Exception.

Here the confusion is finally always execute and method call return; once return statement is used.

package testjava.exceptionhandling;

public class MultipleReturn 
{
	public static void main(String args[])
	{
		int a = 10, b = 0;
		
		System.out.println(multipleReturnTest(10, b));
	}
	
	
	public static int multipleReturnTest(int num1, int num2)
	{
		try
		{
			num1 = num1 / num2;
			return num1;
		}
		catch(Exception e)
		{
			num1 = 7;
			return num1;
		}
		finally
		{
			return num1;
		}
	}	
}

Output

The different types of frameworks are:

We can handle special keyboard and mouse events by using Advanced User Interactions API. The Advanced User Interactions API contains the Actions and the Action Classes that are needed for executing these events. Most commonly used keyboard and mouse events provided by the Actions class are mentioned below:

Use below code to scroll down to a particular element using JavaScript Executor in Selenium:

((JavascriptExecutor) driver).executeScript("arguments[0].scrollIntoView();", element);

We can scroll down a page by using window.scrollBy() function. Example:

((JavascriptExecutor) driver).executeScript("window.scrollBy(0,500)");

JavaScriptExecutor is an interface which provides a mechanism to execute Javascript through the Selenium WebDriver. It provides "executescript" and "executeAsyncScript" methods, to run JavaScript in the context of the currently selected frame or window. An example of that is:

JavascriptExecutor js = (JavascriptExecutor) driver; 
js.executeScript(Script,Arguments);

We can write a code such that we specify the XPath of the web element that needs to be visible on the page and then ask the WebDriver to wait for a specified time. Look at the sample piece of code below:

WebDriverWait wait=new WebDriverWait(driver, 20);
Element = wait.until(ExpectedConditions.alertIsPresent());