Suppose we have a String object referenced by a variable called listing. Suppose we want a new String object that consists of the first 5 characters in listing. Which of the following lines of code will achieve this?
a) String prefix = listing.front(5);
b) String prefix = listing.front(6);
c) String prefix = listing.substring(1,5);
d) String prefix = listing.substring(0,5);
e) String prefix = listing.firstChars(5);
d) String prefix = listing.substring(0,5);
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Write an applet that provides a windowing interface to let a user enter two resistor values and choose which configuration to calculate. Include two text fields (label them Resistor 1 and Resistor 2) for the two input values, two buttons (label them Series and Parallel) to select the configuration, and another text field (label it Equivalent Resistance) to display the calculated value and indicate which configuration was selected. For example, if the user enters 100 for R1 and 50 for R2 and clicks the Series button, the message would read Series Equivalent = 150. If the user enters the same values and clicks the Parallel button, the message would read Parallel Equivalent = 33.3. Put the applet in a Web page that explains the calculations.
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