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If a quad in a K-map appears redundant when grouping is done without wrapping, but becomes useful and necessary after applying wrap-around grouping, should we use the wrapping method and include that quad in the final simplified expression?
If a quad in a K-map appears redundant when grouping is done without wrapping, but becomes useful and necessary after applying wrap-around grouping, should we use the wrapping method and include that quad in the final simplified expression?
Read lessConsider the following Java code: int x = 7896;System.out.println(x + ‘\b’); a) What will be the output of this program?b) Explain why '\b' does not behave like a backspace here and instead changes the output to a different number.c) ...Read more
Consider the following Java code:
int x = 7896;
System.out.println(x + ‘\b’);
a) What will be the output of this program?
b) Explain why '\b' does not behave like a backspace here and instead changes the output to a different number.
c) How should \b be used in Java to actually demonstrate the backspace effect in console output?
In Java, consider the following code snippet:Scanner sc = new Scanner(System.in); System.out.print("Enter your age: "); int age = sc.nextInt(); System.out.print("Enter your full name: "); String name = sc.nextLine(); System.out.println("Age: " + age); System.out.println("Name: " + name);When ...Read more
In Java, consider the following code snippet:
When the input is:
The output is:
Explain why the nextLine() method appears to “skip” input in this case.
The nextLine() method appears to skip input because after executing nextInt(), the newline character (\n) from pressing Enter is still left in the input buffer. When nextLine() is called immediately after, it reads this leftover newline character instead of waiting for new user input. As a result, iRead more
The nextLine() method appears to skip input because after executing nextInt(), the newline character (\n) from pressing Enter is still left in the input buffer.
When nextLine() is called immediately after, it reads this leftover newline character instead of waiting for new user input. As a result, it returns an empty string and seems to “skip” the input.
To fix the issue, insert an extra sc.nextLine(); after nextInt() to consume the leftover newline character.
Scanner sc = new Scanner(System.in);
System.out.print(“Enter your age: “);
int age = sc.nextInt();
sc.nextLine(); // consume the leftover newline
System.out.print(“Enter your full name: “);
String name = sc.nextLine();
System.out.println(“Age: ” + age);
System.out.println(“Name: ” + name);
Now, if the input is:
20
Rahul Sharma
The output will be:
Age: 20
Name: Rahul Sharma
What is the difference between next() and nextLine()?
What is the difference between next() and nextLine()?
Read less1. next() Function: Reads the next token (word) from input. Delimiter: Stops reading when it encounters whitespace (space, tab, or newline). Ignores: Leading whitespace before the token. Use case: Good for reading single words. Example: Scanner sc = new Scanner(System.in); System.out.print("Enter yoRead more
next()Function: Reads the next token (word) from input.
Delimiter: Stops reading when it encounters whitespace (space, tab, or newline).
Ignores: Leading whitespace before the token.
Use case: Good for reading single words.
Example:
Input:
Output:
👉 It only captures "Rahul" because next() stops at the first space.
nextLine()Function: Reads the entire line of input (until Enter/\n).
Delimiter: Stops only when the newline character is encountered.
Use case: Good for reading sentences or full lines with spaces.
Example:
Input:
Output:
👉 Here it captures the whole line, including spaces.
| Feature | next() | nextLine() |
|---|---|---|
| Reads up to | Whitespace (space, tab, newline) | End of line (\n) |
| Can read spaces? | ❌ No (stops at space) | ✅ Yes (includes spaces) |
| Best for | Single words/tokens | Full sentences / whole line |
In Java programming sum(5,6) will call for which of these functions in a class sum(double a, int b) or sum(int a, int b) ?
In Java programming sum(5,6) will call for which of these functions in a class sum(double a, int b) or sum(int a, int b) ?
Read lessIn Java, the method that will be called when you write sum(5, 6) depends on method overloading resolution, which considers the most specific match based on the types of the arguments. Given: sum(5, 6); Here, both arguments are integers (int literals). And you have two overloaded methods: sum(int a,Read more
In Java, the method that will be called when you write sum(5, 6) depends on method overloading resolution, which considers the most specific match based on the types of the arguments.
Given:
sum(5, 6);
Here, both arguments are integers (int literals).
And you have two overloaded methods:
sum(int a, int b)
sum(double a, int b)
Resolution:
Java will choose the most specific method that matches the argument types without needing conversion.
sum(int a, int b) matches exactly.
sum(double a, int b) would require widening the first int to a double.
Therefore, sum(int a, int b) will be called.
Summary:
In Java, when overloading methods:
Java prefers exact matches.
Widening conversions (like int to double) are only used if no exact match is found.
So:
sum(5, 6); // calls sum(int a, int b)
See lessWhat will be the output of substring(0,0) in java?
What will be the output of substring(0,0) in java?
Read lessIn Java, the substring(int beginIndex, int endIndex) method returns a new string starting from beginIndex (inclusive) and ending at endIndex (exclusive). Example: String str = "example"; System.out.println(str.substring(0, 0)); Output: "" This means an empty string is returned. Explanation: beginIndRead more
In Java, the substring(int beginIndex, int endIndex) method returns a new string starting from beginIndex (inclusive) and ending at endIndex (exclusive).
Example:
String str = “example”;
System.out.println(str.substring(0, 0));
Output: “”
This means an empty string is returned.
Explanation:
beginIndex = 0 (inclusive)
endIndex = 0 (exclusive)
No characters are selected, so the result is an empty string “”.
See lessWhat is the difference between whitespace and unicode space character.
What is the difference between whitespace and unicode space character.
Read lessKey Difference Term Whitespace Unicode Space Character Definition Any character that creates "blank" space in text (invisible characters that separate words or lines). Specific space-like characters defined in the Unicode standard. Scope A broad category that includes a variety of invisible characteRead more
Key Difference
Term Whitespace Unicode Space Character
Definition Any character that creates “blank” space in text (invisible characters that separate words or lines). Specific space-like characters defined in the Unicode standard.
Scope A broad category that includes a variety of invisible characters like spaces, tabs, and newlines. A subset of Unicode characters that are defined as various types of space.
Examples ‘ ‘ (space), \n (newline), \t (tab), \r (carriage return) U+0020 (Space), U+00A0 (No-Break Space), U+2003 (Em Space), U+2009 (Thin Space), etc.
In Java / Programming Identified by Character.isWhitespace() Each Unicode space has a specific code point, width, and behavior in rendering.
1. Whitespace Characters
These are general characters that create space but are often interpreted by programming languages or parsers.
In Java, Character.isWhitespace(c) returns true for:
Standard space ‘ ‘ (U+0020)
Tab \t (U+0009)
Newline \n (U+000A)
Carriage return \r (U+000D)
Vertical tab \u000B
Form feed \u000C
All Unicode characters categorized as whitespace.
2. Unicode Space Characters
Unicode defines many space characters explicitly, each with a specific purpose or width. Here are a few notable ones:
Unicode Name Width/Use
U+0020 Space Standard space character
U+00A0 No-Break Space Same as space but prevents line breaks
U+2000 En Quad Space equal to 1 en
U+2001 Em Quad Space equal to 1 em
U+2002 En Space Narrower than em space
U+2003 Em Space Wider space for typesetting
U+2009 Thin Space Very narrow space
U+202F Narrow No-Break Space Narrower than no-break space
U+3000 Ideographic Space Used in East Asian scripts, full-width
These characters may not be detected by simple string manipulations unless Unicode-aware methods are used.
Important Distinctions
All Unicode space characters are whitespace, but not all whitespace characters are Unicode space characters.
Some whitespace characters (like \n, \t) are control characters, not printable spaces.
Unicode spaces may have width, non-breaking behavior, or typographic purpose.
Summary
Concept Includes
Whitespace Spaces, tabs, newlines, form feeds, etc.
Unicode Space Characters Precisely defined space characters like U+00A0, U+2002, U+2003, etc.
Is blockchain still relevant for startups in 2025, or has it been overshadowed by AI?
Is blockchain still relevant for startups in 2025, or has it been overshadowed by AI?
Read lessYes, blockchain is still very relevant, but its role has evolved, and its visibility has been overshadowed by the AI boom. --- The Current Landscape (2025) 1. AI is Dominating Headlines Artificial Intelligence — especially Generative AI — has taken center stage. Most funding, media attention, and taRead more
Yes, blockchain is still very relevant, but its role has evolved, and its visibility has been overshadowed by the AI boom.
—
The Current Landscape (2025)
1. AI is Dominating Headlines
Artificial Intelligence — especially Generative AI — has taken center stage. Most funding, media attention, and talent are being funneled toward AI startups. This doesn’t mean blockchain is dead — it’s just less hyped right now.
2. Blockchain’s Shift from Hype to Utility
The 2017–2021 era was heavy on speculation (think ICOs, NFTs, and meme coins). But now, in 2025, the blockchain space has matured:
Enterprise adoption is rising (e.g., supply chain, data integrity, tokenization).
Layer 2 solutions are making transactions faster and cheaper.
Decentralized identity and Zero-Knowledge Proofs are gaining real traction in privacy-focused applications.
—
Where Blockchain Still Shines for Startups
1. Decentralized Finance (DeFi)
Startups are building real banking alternatives, especially in developing nations.
2. Supply Chain Transparency
Blockchain ensures authenticity and traceability — critical in food, pharma, and luxury goods.
3. Decentralized Storage and Web3
Projects like IPFS and Filecoin power a new internet architecture that startups can build on.
4. Creator Economy & Ownership
Startups are using NFTs (not as art, but as tools) to manage rights, royalties, and digital identity.
5. Interoperability and Identity
Self-sovereign identity systems built on blockchain are becoming foundational for trust in digital ecosystems.
—
Investor Sentiment (2025)
AI is the big fish. Startups with AI + X (e.g., AI + Healthcare, AI + Education) are securing massive rounds.
Blockchain funding has become more focused. VCs are backing infrastructure projects or use cases with provable real-world impact.
“AI x Blockchain” startups are emerging, combining the strengths of both (e.g., using blockchain for verifiable AI model outputs or protecting data provenance).
—
Strategic Takeaway for Startups
If your idea is AI-first, go all in — it’s a gold rush.
If your problem demands decentralization, transparency, or trust without intermediaries — blockchain is still your best bet.
If you can mix AI and blockchain meaningfully — you’re in an emerging sweet spot.
See lessWhat emerging technologies (e.g., quantum computing, metaverse) will dominate the next decade?
What emerging technologies (e.g., quantum computing, metaverse) will dominate the next decade?
Read lessHow will AI advancements like ChatGPT and Quora’s Poe reshape content creation and knowledge sharing?
How will AI advancements like ChatGPT and Quora’s Poe reshape content creation and knowledge sharing?
Read less
Answer: a) 7904 b) Explanation: In Java, '\b' is a character literal representing the backspace character. Its Unicode (ASCII) value is 8. In the expression x + '\b': x = 7896 (an int) '\b' = 8 (a char promoted to int) So the calculation is: 7896 + 8 = 7904 Hence, the output is 7904. The backspaceRead more
Answer:
a) 7904
b) Explanation:
c) Correct way to demonstrate backspace:
To actually see the backspace effect in console output, \b must be used inside a string:
public class BackspaceDemo {
public static void main(String[] args) {
System.out.println(“7896\b”);
}
}
Here, the \b moves the cursor back by one position, so the 6 gets erased and in this case answer will be 789
See less