Just questions 7,9,11

EXERCISES . Mark the following statements as true or false variable declared using a class is called an objert. b. I n the statement x-console, next Int () ,. A mint be a variable You generate the newline character by pressing Enter (retum) on the e. keyboard. d. The methods printf and format are used to format a decimal number to a specific number of decimal places How does a variable of a primitive type differ from a reference variable? What is an object? 2. 3. 4. 5. What does the operator new do? Suppose that str is a string variable. Write a Java statement that uses the operator new to instantiate the object str and assign the string "Java Programming" to str 6. What is garbage collection? Write the statement that instructs the Java system to (jmmediately) perform garbage collection Which package contains eolass Btring? If a program uses this clas, explan why it is not neceary to explicily import this clas using the import statement. 7