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Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What will be the result of String s1 = "Good"; String s2 = "Morning"; String s3 = s1 + s2;?
💡 Hint: Check how concatenation works.
Question 2
Easy
How would you concatenate s1 and s2 with a space in between using the + operator?
💡 Hint: Think about including an empty string space.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the primary operator used for string concatenation in Java?
- &
- +
- *
- /
💡 Hint: Think about basic math operations in programming.
Question 2
True or False: The concat() method can join two strings together.
- True
- False
💡 Hint: Recall the definition of this method.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Create two strings using user input, concatenate them with a space in between, and return the result in a formatted output statement.
💡 Hint: Consider how user input can be used in concatenation.
Question 2
Given a string array of words, write a method that concatenates all the words into a single string separated by spaces.
💡 Hint: Using a StringBuilder can optimize string concatenation.
Challenge and get performance evaluation