Which of the following are false. A Java variable can begin with the underscore character. A Java identifier can begin with a digit such as 1,2,3, etc A Java identifier can begin with a letter of the alphabet. All of the above are true statements.
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Which of the following are false.
A Java variable can begin with the underscore character.
A Java identifier can begin with a digit such as 1,2,3, etc
A Java identifier can begin with a letter of the alphabet.
All of the above are true statements.
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- Write a Java regular expression for each of the following: a. Phone numbers, such as (609) 555-1234 b. Social Security numbers, such as 123-45-6789 c. Dates, such as December 31, 1999Which of the following statement is true for the java code?Which of the following statements is NOT equivalent to the statement, "There exists either a computer scientist or a mathematician who knows both discrete math and Java."a. There exists a person who is a computer scientist and who knows both discrete math and Java or there exists a person who is a mathematician and who knows both discrete math and Java.b. There exists a person who is a computer scientist and who knows both discrete math and Java or there exists a mathematician who knows both discrete math and Java.c. There exists a person who is a computer scientist or there exists a person who is a mathematician who knows discrete math or who knows Java. d. There exists a computer scientist who knows both discrete math and Java or there exists a person who is a mathematician who knows both discrete math and Java. e. There exists a person who is a computer scientist or a mathematician who knows both discrete math and Java.
- Write one of each of the following statements. They must be entirely unique, not from thetextbook, the internet or class examples. Include examples that are relevant to you.a) A statement using a conjunction and how you know when that statement is true.b) A statement using a negation.c) A statement using a disjunction.d) A conditional statement and how you know when that statement is falsee) A biconditional statementf) A statement that contains a quantifier and the negation of that statement.2 Which of the following is a valid variable name in Java? A.name B.if C.for D.switchTHIS IS IN JAVA Given x = 1, y = 2, and z = 3, how is the expression evaluated? In the choices, items in parentheses are evaluated first. <pre><code>(x == 5) || (y == 2) && (z == 5)</code></pre> A. false OR (true AND false) --> false OR false --> false B. false OR (true AND false) --> false OR true --> true C. (false OR true) AND false --> true AND false --> false D. (false OR true) AND false --> true AND false --> true
- Do a Java program that asks the user to enter three (3) first names then display the following: All the possible two-name combinations (Ask the user to select a name by entering 1 to 6.) The initials of the chosen combined name (Ex. John Ryan = JR)Decidewhich of the following statements is either true or false and re-correct the false ones.1. The value of the following logical expression is true (1 + 2 == 2) || (4 - 4 == 0)2. In Java, once a variable is declared, it will be visible and could be used anywhere in theprogram.3. Strings are primitive data type in Java.4. In Java, we can initialize a variable during its declaration.5. do ... while repetition statement gives full control on the code block to be repeated.6. All binary operators except for the assignment operators are evaluated from Left to Right7. A ragged 2D array is a 2D array in which each column may contain different number of rows.8. Each row in a 2D array could be dealt with as 1D array.9. The following statement creates and initializes the array x:int x[] = {10, 20, 30, 40, 50};10. A Java program may contain more than one method with the same signatureYOU MUST SOLVE IT BY JAVA Write a Java program to do the following task: Assign your id number (example. 2014299123) to an integer variable id_num Using reminder operator % on the id_num get the last digit (3) and store it in num If the num is between 0 and 3 (both included), display “You are in Group 1” Otherwise if the num is between 4 and 6 (both included), display “You are in Group 2” Otherwise (num is between 7 and 9 (both included), display “You are in Group 3” Save your file as Q2.Java
- a) Write a Java statement that declares a variable to hold a student's exam score. b). Write a Java statement that declares a variable to hold a student's GPA. c). Write a Java statement that declares a variable to hold a student's exam score 89 d). Write a Java statement that declares a variable to hold a student GPA 3.5 Answer:Create a java program that ask user to enter three names All the possible two-name combinations (Ask the user to select a name by entering 1 to 6.) The initials of the chosen combined name (Ex. John Ryan = JR) Suggested username based on the combined name (The name will be in small letters and the space will be changed to underscore. Ex. John Ryan = john_ryan)IN JAVA Complete the program below so that it prompts the user for a temperature value, followed by a character that represents the type of temperature: C for Celsius F for Farhenheit If the character represents Fahrenheit temperature (F), convert the temperature value to the equivalent value in Celsius, using the following formula:C = (5/9)(F - 32.0)where C represents the Celsius temperature value, and F represents the Farhenheit temperature value. If the character represents Celsius temperature (C), convert the temperature value to the equivalent value in Farhenheit, using the following formula: F = (9/5)C + 32.0