Suppose an ArrayList list contains {“red”, “green”, “red”, “green”}. What is the list after the following code? list.remove(“red”);

What is the output of the following code?public class Test { public static void main(String[] args) { new Person().printPerson(); new Student().printPerson(); }}class Student extends Person { @Override public String getInfo() { return “Student”; }}class Person { public String getInfo() { return “Person”; } public void printPerson() { System.out.println(getInfo()); }}

Which method can be used to create an input object for file temp.txt?

Which class contains the method for checking whether a file exists?

Show the output of the following code: String array = {“re…”…

The output from the following code is ________.java.util.ArrayList list = new java.util.ArrayList();list.add(“New York”);java.util.ArrayList list1 = list;list.add(“Atlanta”);list1.add(“Dallas”);System.out.println(list1);

Given two reference variables t1 and t2, if t1 == t2 is true, t1.equals(t2) must be ________.

What is the output of the following code?public class Test { public static void main(String[] args) { String s1 = new String(“Welcome to Java!”); String s2 = new String(“Welcome to Java!”); if (s1.equals(s2)) System.out.println(“s1 and s2 have the same contents”); else System.out.println(“s1 and s2 have different contents”); }}

Analyze the following code:public class Test { int x; public Test(String t) { System.out.println(“Test”); } public static void main(String[] args) { Test test = new Test(); System.out.println(test.x); }}

What is displayed by the following code? System.out.print(“Hi, ABC, good”.matches(“ABC “) + ” “); System.out.println(“Hi, ABC, good”.matches(“.*ABC.*”));