3: String s = "purr"; 4: s.toUpperCase(); 5: s.trim(); 6: s.substring(1, 3); 7: s += " two"; 8: System.out.println(s.length());
❌ A. 2 ❌ B. 4 ✅ C. 8 ❌ D. 10 ❌ E. An exception is thrown. ❌ F. The code does not compile
Explanation: This question is trying to see if you know that String objects are immutable. Line 4 returns "PURR" but the result is ignored and not stored in s. Line 5 returns "purr" since there is no whitespace present but the result is again ignored. Line 6 returns "ur" because it starts with index 1 and ends before index 3 using zero-based indexes. The result is ignored again. Finally, on line 6 something happens. We concatenate four new characters to s and now have a String of length 8.
3: String s = "purr"; 4: s.toUpperCase(); 5: s.trim(); 6: s.substring(1, 3); 7: s += " two"; 8: System.out.println(s.length());
❌ A. 2 ❌ B. 4 ✅ C. 8 ❌ D. 10 ❌ E. An exception is thrown. ❌ F. The code does not compile
Explanation: This question is trying to see if you know that String objects are immutable. Line 4 returns "PURR" but the result is ignored and not stored in s. Line 5 returns "purr" since there is no whitespace present but the result is again ignored. Line 6 returns "ur" because it starts with index 1 and ends before index 3 using zero-based indexes. The result is ignored again. Finally, on line 6 something happens. We concatenate four new characters to s and now have a String of length 8.
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Some messages aren’t supposed to last forever. There are some Telegram groups and conversations where it’s best if messages are automatically deleted in a day or a week. Here’s how to auto-delete messages in any Telegram chat. You can enable the auto-delete feature on a per-chat basis. It works for both one-on-one conversations and group chats. Previously, you needed to use the Secret Chat feature to automatically delete messages after a set time. At the time of writing, you can choose to automatically delete messages after a day or a week. Telegram starts the timer once they are sent, not after they are read. This won’t affect the messages that were sent before enabling the feature.
Start with a fresh view of investing strategy. The combination of risks and fads this quarter looks to be topping. That means the future is ready to move in.Likely, there will not be a wholesale shift. Company actions will aim to benefit from economic growth, inflationary pressures and a return of market-determined interest rates. In turn, all of that should drive the stock market and investment returns higher.
