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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The cloud-based messaging platform is also adding Anonymous Group Admins feature. As per Telegram, this feature is being introduced for safer protests. As per the Telegram blog post, users can “Toggle Remain Anonymous in Admin rights to enable Batman mode. The anonymized admin will be hidden in the list of group members, and their messages in the chat will be signed with the group name, similar to channel posts.”
Traders also expressed uncertainty about the situation with China Evergrande, as the indebted property company has not provided clarification about a key interest payment.In economic news, the Commerce Department reported an unexpected increase in U.S. new home sales in August.Crude oil prices climbed Friday and front-month WTI oil futures contracts saw gains for a fifth straight week amid tighter supplies. West Texas Intermediate Crude oil futures for November rose $0.68 or 0.9 percent at 73.98 a barrel. WTI Crude futures gained 2.8 percent for the week.
