1. Given an arrayList, write a java program to eliminate its duplicates. Example 1: Input: List nums =Arrays.asList(1,1,1,2,2,3); Output: [1,2, 3]

Problem Statement: (The following problem is based on a problem in a number of Java texts, including the text by Gaddis.) Given a numeric expression in prefix form, develop a Java program to evaluate the expression. The following site provides some explanation on prefix expressions, as well as other forms of numeric expressions: Infix, Prefix and Postfix Expressions (Links to an external site.)  Input Data: Repeatedly, enter one prefix expression (as a string) at a time at the keyboard alternatively, you may set up an input data file and get the data from the file Stop the inputting, when the user does not want to enter any additional strings NOTE 1: To simplify matters, assume that only non-negative integers are used the allowed operations are binary addition/subtraction, multiplication, division, and modulus operations Processing: Set up a method (or methods) to evaluate the given expression.   Output Data:          Echo back the entered input string, along with the result…

Use Java. Please see the requirements (good indentation, matching the code EXACTLY how it is below, etc.)

In Java, an identifier, which can be class name or method name, is a series (string) of the following groups/types of characters: {fill/continue from 2)  (1) Lower-case alphabet characters: a – z, (2) ……………..… (3) …………….…… (4) ……………... (5) ………….

HELP NEEDED ASAP!  Language: JAVA The following code sequence is supposed to compare a float and a double with the same value and output that they are equal. What is wrong with the following code sequence? Why is it not showing the correct answer? Write your code to fix the problem. float piF = 3.141592653589793f; double piD = 3.141592653589793; if(piF == piD)    System.out.println("piF and piD are equal"); else     System.out.println("piF and piD are not equal");

How can you generate random numbers in Java?

Constant Assignment • The compiler will issue an error if you try to change the value of a constant • In Java, we use the final modifier to declare a constant final int x= 69; Add x= x+10 What is the result?

ll data members must be declared as private. Global variables are not allowed. Constants are ok. There should be no usage of cin or cout in the method or in the class definition or required functions. They should be handled using parameters and return values. cin and cout can and should be used in the testing functions. There should be only one “return” statement in a function or method. Multiple return statements within the same function/method are not allowed. Please pay attention to the required data types in the description. tuple, list and vector classes are not allowed to be used in this exam. Please write C++ functions, class and methods to answer the following questions. 1. Define a new C++ class named “Exam” that manages simple exam information: student id (integer) and a score (integer) The class must provide at least the following two methods: • isPassing which will return a boolean: true if the score is >=60 and false otherwise • toString method that returns the string…