1. Which variable names are legal, which are not? (5 pts) 1.1) 3abc 1.2) _myABC 1.3)...

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1. Which variable names are legal, which are not? (5 pts) 1.1) 3abc 1.2) _myABC 1.3) _1_2_3_a_b_c 1.4) ABC 1.5) x@y 2. Calculations (5 pts): 2.1) 100 % 30 * 2 2.2) 25-8/10 2.3) 8*2%3 2.4) 13 % 15 2.5) 22% 11 3. Which Java code is correct? Which is not? Explain the reason if it is not correct. (6 pts) 3.1) int 3.2) 3.3) double char int 3 W = 1; double pi= pi * 2; X; Y; X; W; pi; 4. How do I check an integer variable, x, is greater than 5 but less than 20? Please write down your Java expression (2 pts). 5. Please fill out the table (result should be either true or false) (5 pts) Result 6.2) 6. What will be the output of each code part below? (each code part is independent) (4 pts) 6.1) ! (99 > 100) (1> 0) && (2> 3) && (102<100) (0 == 1) // (12+ 3 > 20) // (6 != 2) int if (A % 2 == 0) { A = A/2; } else { } Expression (20<40) && (1 != 0) (1 == 0) // (2 == 3) A = 2022; } else { System.out.println (A); } A=A-1; int if (x != 2020) { x = 2022; X = X-1; x= x + 1; System.out.println("x is " + x); 7. (2 pts) What will be output if the initial value of magicNum is 22 ? switch (magicNum % 7) { case 1: } case 3: case 5: magicNum *= 3; break; magicNum += 5; break; magicNum - -= 2; break; magicNum = 7; default: 17 System.out.println ("magicNum is + magicNum); 8. Read the code and answer the questions below. (4 pts) year = input.nextint(); if (year >= 1776) { System.out.println ("The New Nation"); } else if (year >= 1861) { System.out.println ("Civil War"); } else if (year >= 1877) { System.out.println ("Rise of Industrial"); } else if (year >= 1900) { } System.out.println ("New Era") 8.1 What will be the output if the input year is 1899 ? 8.2 What will be the output if the input year is 1690? 9. Below is an incomplete code part that is going to read TWO integers from user input. The code is supposed to print the larger value of them. Please finish the code (4 pts). int number1, number2; Scanner input = new Scanner(System.in); number1= input.nextlnt(); number2 = input.nextint(); 1. Which variable names are legal, which are not? (5 pts) 1.1) 3abc 1.2) _myABC 1.3) _1_2_3_a_b_c 1.4) ABC 1.5) x@y 2. Calculations (5 pts): 2.1) 100 % 30 * 2 2.2) 25-8/10 2.3) 8*2%3 2.4) 13 % 15 2.5) 22% 11 3. Which Java code is correct? Which is not? Explain the reason if it is not correct. (6 pts) 3.1) int 3.2) 3.3) double char int 3 W = 1; double pi= pi * 2; X; Y; X; W; pi; 4. How do I check an integer variable, x, is greater than 5 but less than 20? Please write down your Java expression (2 pts). 5. Please fill out the table (result should be either true or false) (5 pts) Result 6.2) 6. What will be the output of each code part below? (each code part is independent) (4 pts) 6.1) ! (99 > 100) (1> 0) && (2> 3) && (102<100) (0 == 1) // (12+ 3 > 20) // (6 != 2) int if (A % 2 == 0) { A = A/2; } else { } Expression (20<40) && (1 != 0) (1 == 0) // (2 == 3) A = 2022; } else { System.out.println (A); } A=A-1; int if (x != 2020) { x = 2022; X = X-1; x= x + 1; System.out.println("x is " + x); 7. (2 pts) What will be output if the initial value of magicNum is 22 ? switch (magicNum % 7) { case 1: } case 3: case 5: magicNum *= 3; break; magicNum += 5; break; magicNum - -= 2; break; magicNum = 7; default: 17 System.out.println ("magicNum is + magicNum); 8. Read the code and answer the questions below. (4 pts) year = input.nextint(); if (year >= 1776) { System.out.println ("The New Nation"); } else if (year >= 1861) { System.out.println ("Civil War"); } else if (year >= 1877) { System.out.println ("Rise of Industrial"); } else if (year >= 1900) { } System.out.println ("New Era") 8.1 What will be the output if the input year is 1899 ? 8.2 What will be the output if the input year is 1690? 9. Below is an incomplete code part that is going to read TWO integers from user input. The code is supposed to print the larger value of them. Please finish the code (4 pts). int number1, number2; Scanner input = new Scanner(System.in); number1= input.nextlnt(); number2 = input.nextint();

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