Exam 3: Introduction to Objects and Input/output

Consider the following statements.double x; String y;y = String.format("%.2f", x);If x = 285.679, what is the value of y?

The value of the expression Integer.parseInt("+782") is "782".

String sentence; String str1, str2, str3, str4; Int length1;sentence = "First exam is on Monday.";str1 = sentence.substring(6, 12); Str2 = str1.substring(0, 4); Str3 = sentence.replace('i', '#'); Str4 = sentence.indexOf("on");length1 = sentence.length();Based on the code above, what is the value of str3?

What is the output of the following statement?System.out.printf("%.2f", 48.9);

Java provides automatic garbage collection.

Which package is automatically imported by the Java system?

String variables are reference variables.

Which of the following is an area of secondary storage used to hold information?

The method printf is used only to format the output of integers and decimal numbers.

Which of the following method is contained in the package java.util?