3: boolean x = true, z = true; 4: int y = 20; 5: x = (y != 10) ^ (z=false); 6: System.out.println(x+", "+y+", "+z);
❌ A. true, 10, true ✅ B. true, 20, false ❌ C. false, 20, true ❌ D. false, 20, false ❌ E. false, 20, true ❌ F. The code will not compile because of line 5
Explanation: This example is tricky because of the second assignment operator embedded in line 5. The expression (z=false) assigns the value false to z and returns false for the entire expression. Since y does not equal 10, the left-hand side returns true; therefore, the exclusive or (^) of the entire expression assigned to x is true. The output reflects these assignments, with no change to y, so option B is the only correct answer. The code compiles and runs without issue, so option F is not correct.
3: boolean x = true, z = true; 4: int y = 20; 5: x = (y != 10) ^ (z=false); 6: System.out.println(x+", "+y+", "+z);
❌ A. true, 10, true ✅ B. true, 20, false ❌ C. false, 20, true ❌ D. false, 20, false ❌ E. false, 20, true ❌ F. The code will not compile because of line 5
Explanation: This example is tricky because of the second assignment operator embedded in line 5. The expression (z=false) assigns the value false to z and returns false for the entire expression. Since y does not equal 10, the left-hand side returns true; therefore, the exclusive or (^) of the entire expression assigned to x is true. The output reflects these assignments, with no change to y, so option B is the only correct answer. The code compiles and runs without issue, so option F is not correct.
BY Explanations “Top Java Quiz Questions”
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The lead from Wall Street offers little clarity as the major averages opened lower on Friday and then bounced back and forth across the unchanged line, finally finishing mixed and little changed.The Dow added 33.18 points or 0.10 percent to finish at 34,798.00, while the NASDAQ eased 4.54 points or 0.03 percent to close at 15,047.70 and the S&P 500 rose 6.50 points or 0.15 percent to end at 4,455.48. For the week, the Dow rose 0.6 percent, the NASDAQ added 0.1 percent and the S&P gained 0.5 percent.The lackluster performance on Wall Street came on uncertainty about the outlook for the markets following recent volatility.
NEWS: Telegram supports Facetime video calls NOW!
Secure video calling is in high demand. As an alternative to Zoom, many people are using end-to-end encrypted apps such as WhatsApp, FaceTime or Signal to speak to friends and family face-to-face since coronavirus lockdowns started to take place across the world. There’s another option—secure communications app Telegram just added video calling to its feature set, available on both iOS and Android. The new feature is also super secure—like Signal and WhatsApp and unlike Zoom (yet), video calls will be end-to-end encrypted.
