1: public class Egret { 2: private String color; 3: public Egret() { 4: this("white"); 5: } 6: public Egret(String color) { 7: color = color; 8: } 9: public static void main(String[] args) { 10: Egret e = new Egret(); 11: System.out.println("Color:" + e.color); 12: } 13: }
❌ A. Color: ✅ B. Color:null ❌ C. Color:White ❌ D. Compiler error on line 4. ❌ E. Compiler error on line 10. ❌ F. Compiler error on line 11.
Explanation: Line 10 calls the constructor on lines 3–5. That constructor calls the other constructor. However, the constructor on lines 6–8 assigns the method parameter to itself, which leaves the color instance variable on line 2 set to its default value of null
1: public class Egret { 2: private String color; 3: public Egret() { 4: this("white"); 5: } 6: public Egret(String color) { 7: color = color; 8: } 9: public static void main(String[] args) { 10: Egret e = new Egret(); 11: System.out.println("Color:" + e.color); 12: } 13: }
❌ A. Color: ✅ B. Color:null ❌ C. Color:White ❌ D. Compiler error on line 4. ❌ E. Compiler error on line 10. ❌ F. Compiler error on line 11.
Explanation: Line 10 calls the constructor on lines 3–5. That constructor calls the other constructor. However, the constructor on lines 6–8 assigns the method parameter to itself, which leaves the color instance variable on line 2 set to its default value of null
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Telegram has no known backdoors and, even though it is come in for criticism for using proprietary encryption methods instead of open-source ones, those have yet to be compromised. While no messaging app can guarantee a 100% impermeable defense against determined attackers, Telegram is vulnerabilities are few and either theoretical or based on spoof files fooling users into actively enabling an attack.
In many cases, the content resembled that of the marketplaces found on the dark web, a group of hidden websites that are popular among hackers and accessed using specific anonymising software.“We have recently been witnessing a 100 per cent-plus rise in Telegram usage by cybercriminals,” said Tal Samra, cyber threat analyst at Cyberint.The rise in nefarious activity comes as users flocked to the encrypted chat app earlier this year after changes to the privacy policy of Facebook-owned rival WhatsApp prompted many to seek out alternatives.telegram from sa
