Dsmart Systems UI Developer Interview Questions and Answers

25 MCQ questions online with time limit

Create webapp . Frontend, Backend , data encryption

Q1. What are the 4 principles of oops?
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Q2. What is the difference between string buffer and string builder?
Ans. 
String buffer is synchronized and thread-safe, while string builder is not synchronized and faster.
• String buffer is synchronized, making it thread-safe for use in multi-threaded environments.

• String builder is not synchronized, providing better performance in single-threaded applications.

• String builder is faster than string buffer due to lack of synchronization overhead.

• Example: StringBuffer sb = new StringBuffer(); Str...read more
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Q3. Why strings are immutable?
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Strings are immutable in order to ensure data integrity and security.
• Immutable strings prevent accidental data modification, ensuring data integrity.

• Immutable strings enhance security by preventing unauthorized access or tampering.

• Immutable strings allow for more efficient memory management and optimization.

• Example: 'Hello' cannot be changed to 'Hella' directly, a new string must be created.
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Q4. What are the different types of exception in java?
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Q5. Explain linear search algorithm.
Ans. 
Linear search is a simple searching algorithm that sequentially checks each element in a list until a match is found.
• Iterate through each element in the list

• Compare the current element with the target value

• Return the index if a match is found, otherwise return -1
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Q6. Difference between JDK jvm and jre
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JDK includes JRE and development tools, while JRE includes only the Java Runtime Environment.
• JDK stands for Java Development Kit, which includes JRE and development tools like compilers and debuggers.

• JRE stands for Java Runtime Environment, which includes JVM and libraries necessary to run Java applications.

• JVM stands for Java Virtual Machine, which is responsible for executing Java bytecode.

• JDK is used for developing ...read more
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It was online 60min test.

It was offline 30 min test.

Q1. Oops,dbms,css,html,dsa,java.
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Q2. It was very friendly .
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Easy to medium
profit and loss questions
Permutation and combination

Easy to medium
45 mins

Q1. Basic concept of Oops Java basic
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Q2. Constructor Overloading
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Q3. Operator overloading in Java?
Ans. 
Operator overloading allows operators to be redefined for user-defined types in Java.
• Operator overloading is not supported in Java as it can lead to ambiguity and confusion.

• Java does not allow custom operators to be defined or existing operators to be overloaded.

• Instead of operator overloading, Java provides method overloading where methods with the same name but different parameters can be defined.
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Q4. Define java and it's features
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Q1. Introduction Present events
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Easy aptitude, 30 min with 20 question

Simple aptitude questions.

Q1. What's your strength ?
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Q2. Are you willing to work under pressure?
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