Зміст курсу

Java Extended

1. Deep Java Structure

How Does the Compiler Works?Data Transfer in Java Final Keyword Importing Libraries Using Libraries In Our Code Ternary Operator Enhanced Switch Statement

2. Methods

What is a Method?Creating Our Own Methods Challenge: Names Starting with Letter B Void Methods Practice Method Overloading Recursion Challenge: Find Maximum and Minimum in Array

3. String Advanced

Deeper into String Method split()Challenge: Uppercase Even Words indexOf() Method Challenge: Finding the Longest Word trim() Method Challenge: Email Validation

4. Classes

What is Class?Main Class and Method Access Modifiers Class Creation Challenge: Get Information About the Object Constructor Challenge: Team Constructor Method toString()Challenge: Parrot Information Display

5. Classes Advanced

Complex Classes Usage Challenge: Pet and Owner Relationship Private Modifier Challenge: Animal Information Display Getter and Setter Challenge: Updating User Information Summary

trim() Method

How can we get rid of extra space characters?

Sometimes a string may have leading or trailing spaces, which can cause issues in our code. However, Java developers have provided a solution for this by introducing the trim() method. What does it do? This method removes leading and trailing spaces from a string. If there are no leading or trailing spaces, the trim() method simply returns the original string. If the entire string consists of spaces, the trim() method will return an empty string.

Main.java


              12345678910111213
            
package com.example;

// do not modify the code below this comment

public class Main {
    public static void main(String[] args) {
        String string = "   This string contains unnecessary space symbols       ";
        // print the string before using the trim() method
        System.out.println("String before using trim() method: " + string);  
        // print the string after using the trim() method, which removes leading and trailing spaces
        System.out.println("String after using trim() method: " + string.trim());  
    }
}

That's essentially all we can say about this method. However, the trim() method does a lot of good and significantly simplifies working with strings.

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Секція 3. Розділ 6

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Зміст курсу

Java Extended

1. Deep Java Structure

How Does the Compiler Works?Data Transfer in Java Final Keyword Importing Libraries Using Libraries In Our Code Ternary Operator Enhanced Switch Statement

2. Methods

What is a Method?Creating Our Own Methods Challenge: Names Starting with Letter B Void Methods Practice Method Overloading Recursion Challenge: Find Maximum and Minimum in Array

3. String Advanced

Deeper into String Method split()Challenge: Uppercase Even Words indexOf() Method Challenge: Finding the Longest Word trim() Method Challenge: Email Validation

4. Classes

5. Classes Advanced

Complex Classes Usage Challenge: Pet and Owner Relationship Private Modifier Challenge: Animal Information Display Getter and Setter Challenge: Updating User Information Summary

trim() Method

How can we get rid of extra space characters?

Main.java


              12345678910111213
            
package com.example;

// do not modify the code below this comment

public class Main {
    public static void main(String[] args) {
        String string = "   This string contains unnecessary space symbols       ";
        // print the string before using the trim() method
        System.out.println("String before using trim() method: " + string);  
        // print the string after using the trim() method, which removes leading and trailing spaces
        System.out.println("String after using trim() method: " + string.trim());  
    }
}

That's essentially all we can say about this method. However, the trim() method does a lot of good and significantly simplifies working with strings.

Все було зрозуміло?

Дякуємо за ваш відгук!

Секція 3. Розділ 6

Java Extended

trim() Method

How can we get rid of extra space characters?

1. What will be the output of the code from below?

2. What will be the output of the code from below?

3. What will be the output of the code from below?

4. What will be the output of the code from below?

Java Extended

trim() Method

How can we get rid of extra space characters?

1. What will be the output of the code from below?

2. What will be the output of the code from below?

3. What will be the output of the code from below?

4. What will be the output of the code from below?