Explain the usage of "Inheritence" with a sample program

What is the output of this Java program? public class InheritanceProblem { public static void main(String[] args) { System.out.println(new X().message()); System.out.println(new Y().message()); System.out.println(new Z().message()); } } class X { String size, color; X() { this("BIG","RED"); } X(String s, String c) { size = s; color = c; } public String message() { return "I am " + description() + "."; } protected String description() { return size + " and " + color; } } class Y extends X { Y() { super("SMALL","RED"); } public String message() {return "I wish I were " + description() + ".";} } class Z extends X { Z() { super("BIG","BLUE"); } protected String descri... click for more

Example of an array in java using a sample program.

Write all the code for a class called ArrayQsn. This class will contain two methods. The first method runningSumMean accepts an array of ints as a parameter, and will return the mean of the values as a double. It also changes the values of the array so that they are running sum values. For example, the array: {2, 4, 5, 1, 3} Would become: {2, 6, 11, 12, 15} after the method is called. Do not write more than one loop inside the method. Your method must accept any size array. If the array is empty (no values), then provide an error message to the screen and return zero. The second method is the "main" method. Use it to test the runningSumMean method with the array given above. The main ... click for more

The reason positive integers doesn't go to infinity in java.

In real arithmetic, the sum of the inverses of all positive integers goes to infinity. In other words, if we take enough terms in the sum the sum exceeds any fixed value. However, when we compute the sum in Java's floating point arithmetic the largest value we get is 15.403683, regardless of how many terms we add. Explain the possible reasons for this anomaly.

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Need Java help

I need a java program that will calculate and print the number of minutes in a year. Any help?