Java Programming

1. Because sleep is a static method, how can it possibly know what thread it needs to pause? 4. Here is some code that synchronizes thread access to a shared variable. How come it is not guaranteed to output 30,000 every time it is run? public class Counter { private int counter; public Counter() { counter = 0; } public int value() { return counter; } public synchronized void increment() { counter++; } } public class RaceConditionTest extends Thread { private Counter countO...

Generics and the ArrayList Class in java 1. Suppose list is an object of the class ArrayList<String> . How do you add the string "Hello" to the ArrayList list ? 2. Suppose instruction is an object of the class ArrayList<String> that contains the string "Stop" at index position 5 . How do you change the string at index position 5 to "Go" (without changing any of the elements at other positions)? 3. Suppose instruction is an object of the class ArrayList<String> that ...

1. What output is produced by the following lines? String s = "Hello" + "Joe"; Sln(s); 2. Write Java statements that will cause the following to be written to the screen: One two buckle your shoe. Three four shut the door. 3. What is the difference between Sln and S ? 4. What is the output produced by the following lines? Sln(2 + " " + 2); Sln(2 + 2); 5. What output is produced by the following code? String aString = "Jelly beans"; Sln("START0"); Sf("START%sEND %n",...