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2 years ago

How do I find a space in my String and replace it? JAVA

Computers and Technology

1 answer:

Fantom [35]2 years ago

8 0

Answer:

This article shows how to use regex to remove spaces in between a String.

A string with spaces in between.

String text = "Hello World Java.";

We want to remove the spaces and display it as below:

Hello World Java.

1. Java regex remove spaces

In Java, we can use regex \\s+ to match whitespace characters, and replaceAll("\\s+", " ") to replace them with a single space.

Regex explanation.

`\\s` # Matches whitespace characters.

+ # One or more

StringRemoveSpaces.java

package com.mkyong.regex.string;

public class StringRemoveSpaces {

public static void main(String[] args) {

String text = "Hello World Java.";

String result = text.replaceAll("\\s+", " ");

System.out.println(result);

}

Output

Terminal

Hello World Java.

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Answer:

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Explanation:

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Description:

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Answer:

The programming language is not stated (I'll answer using C++)

#include <iostream>

using namespace std;

int convert(float miles)

{

return miles * 5280;

}

int main() {

cout<<"Console:"<<endl;

cout<<"Hike Calculator"<<endl;

float miles;

char response;

cout<<"How many miles did you walk?. ";

cin>>miles;

cout<<"You walked "<<convert(miles)<<" feet"<<endl;

cout<<"Continue? (y/n): ";

cin>>response;

while(response == 'y')

{

cout<<"How many miles did you walk?. ";

cin>>miles;

cout<<"You walked "<<convert(miles)<<" feet"<<endl;

cout<<"Continue? (y/n): ";

cin>>response;

}

cout<<"Bye!";

return 0;

}

Explanation:

Here, I'll explain some difficult lines (one after the other)

The italicized represents the function that returns the number of feet

int convert(float miles)

{

return miles * 5280;

}

The main method starts here

int main() {

The next two lines gives an info about the program

cout<<"Console:"<<endl;

cout<<"Hike Calculator"<<endl;

float miles;

char response;

This line prompts user for number of miles

cout<<"How many miles did you walk?. ";

cin>>miles;

This line calls the function that converts miles to feet and prints the feet equivalent of miles

cout<<"You walked "<<convert(miles)<<" feet"<<endl;

This line prompts user for another conversion

cout<<"Continue? (y/n): ";

cin>>response;

This is an iteration that repeats its execution as long as user continue input y as response

while(response == 'y')

{

cout<<"How many miles did you walk?. ";

cin>>miles;

cout<<"You walked "<<convert(miles)<<" feet"<<endl;

cout<<"Continue? (y/n): ";

cin>>response;

}

cout<<"Bye!";

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Answer:

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2 years ago

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Alex787 [66]

Answer:

import java.util.*;

public class Main{

public static void main(String[] args) {

Scanner input = new Scanner(System.in);

int intgVal; double dblVal; char chrVal; String strVal;

System.out.print("Enter integer: ");

intgVal = input.nextInt();

System.out.print("Enter double: ");

dblVal = input.nextDouble();

System.out.print("Enter character: ");

chrVal = input.next().charAt(0);

input.nextLine();

System.out.print("Enter string: ");

strVal = input.nextLine();

System.out.println(intgVal+" "+dblVal+" "+chrVal+" "+strVal);

System.out.println(strVal+" "+chrVal+" "+dblVal+" "+intgVal);

int IntValue = (int) dblVal;

System.out.print("Cast to an integer: "+IntValue);

}

Explanation:

See attachment for complete program where comments were used to explain each line of the program

Download txt

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