Select the correct line of missing code to create an output of "hello."

Imagine the user types in a complete sentence, but we want to read only the first word and place it in the String variable word.

Vladimir [108]

Answer:

import java.util.Scanner;

public class FirstWord {

public static void main(String[] args) {

//NOW YOU WANT TO COLLECT INPUTS FROM THE STUDENT OR USER

//IMPORT THE SCANNER CLASS FIRST outside your class

// THEN YOU CREATE AN OBJECT OF THE SCANNER CLASS

Scanner input = new Scanner(System.in);

//CREATE A VARIABLE TO HOLD THE USER INPUT

String text = input.nextLine();

//The variable holder will be used to store characters from the for loop

String holder="";

//Create a for loop that loops through the user's input

for(int i=0; i<text.length(); i++){

//As the loop increases, we get the character in the user's input and store them one by one in the variable holder

holder+=text.charAt(i);

if(text.charAt(i)==' '){

//If the loop encounters a space, it means a complete word has been gotten from the user's input

//Then the break below Breaks the loop, and the loop stops running

break;

}

System.out.println(holder);

}

Explanation:

text.length() returns the length of the sequence of characters present in length

text.charAt(a number) Returns the char value at the specified index. An index ranges from 0 to length() - 1. The first char value of the sequence is at index 0, the next at index 1, and so on, as for array indexing.

Create a for loop

How does a for loop work?

It collects a starting point, an end point and an increment respectively....all these are passed in as arguments into the for loop

For example, the code above starts from 0, calculates the number of characters in the user's input and sets it as the end point, the loop runs from zero to the length of the text of the user...

Note: i++ in the loop is the increment, it means the loop increases by 1

8 0

3 years ago

A network administrator identifies sensitive files being transferred from a workstation in the LAN to an unauthorized outside IP

Sav [38]

Answer:

D. Zero-day

Explanation:

It is clearly stated that the antivirus is still up-to-date on the workstation, and there has been no alterations to the firewall. Hence, this means the software is functional and up-to-date with all known viruses. This shows that this attack is unknown to the manufacturer of the antivirus software and hence no virus definition or patch fixing this problem has been developed yet. In this light, it is a zero-day.

A zero-day is a type of vulnerability in a software that is not yet known to the vendor or manufacturer, hence this security hole makes the software vulnerable to attackers or hacker before it is been fixed.

4 0

3 years ago

You want to equip yourself with FRUs for a laptop. What would you take with you? (Choose two)A. RAMB. SD card readerC. Video car

zloy xaker [14]

Answer:

RAM and Hard Drive

Explanation:

An FRU is also called a Field-repleacable Unit and is usually an assembly that is easily removed from an electronic equipment, laptop or just a computer and replaced so that one does not have to take the entire system for repairs. When trying to equip yourself with this unit of a laptop, you must take your Random Access Memory and your hard drive as they contain the whole information on the laptop.

4 0

3 years ago

Modify the WordCount program so it outputs the wordcount for each distinct word in each file. So the output of this DocWordCount

stepladder [879]

Answer and Explanation:

package PackageDemo;

import java.io.IOException;

import org.apache.hadoop.conf.Configuration;

import org.apache.hadoop.fs.Path;

import org.apache.hadoop.io.IntWritable;

import org.apache.hadoop.io.LongWritable;

import org.apache.hadoop.io.Text;

import org.apache.hadoop.mapreduce.Job;

import org.apache.hadoop.mapreduce.Mapper;

import org.apache.hadoop.mapreduce.Reducer;

import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;

import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;

import org.apache.hadoop.util.GenericOptionsParser;

public class WordCount {

public static void main(String [] args) throws Exception

{

Configuration c=new Configuration();

String[] files=new GenericOptionsParser(c,args).getRemainingArgs();

Path input=new Path(files[0]);

Path output=new Path(files[1]);

Job j=new Job(c,"wordcount");

j.setJarByClass(WordCount.class);

j.setMapperClass(MapForWordCount.class);

j.setReducerClass(ReduceForWordCount.class);

j.setOutputKeyClass(Text.class);

j.setOutputValueClass(IntWritable.class);

FileInputFormat.addInputPath(j, input);

FileOutputFormat.setOutputPath(j, output);

System.exit(j.waitForCompletion(true)?0:1);

}

public static class MapForWordCount extends Mapper<LongWritable, Text, Text, IntWritable>{

public void map(LongWritable key, Text value, Context con) throws IOException, InterruptedException

{

String line = value.toString();

String[] words=line.split(",");

for(String word: words )

{

Text outputKey = new Text(word.toUpperCase().trim());

IntWritable outputValue = new IntWritable(1);

con.write(outputKey, outputValue);

}

public static class ReduceForWordCount extends Reducer<Text, IntWritable, Text, IntWritable>

{

public void reduce(Text word, Iterable<IntWritable> values, Context con) throws IOException, InterruptedException

{

int sum = 0;

for(IntWritable value : values)

{

sum += value.get();

}

con.write(word, new IntWritable(sum));

}

8 0

3 years ago

Which major and minor keys have no sharps or flats apex?

9966 [12]

C major and A minor have no sharps or flats.

5 0

3 years ago

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