Solve these java problems?
1) Design and implement an application that reads an arbitrary number of integers that are in the range 0 to 50 inclusive and counts how many occurrences of each are entered. After all input has been processed, print all of the values (with the number of occurrences) that are entered one or more times. (Hint: can use idea from LetterCount program in the book)

2) prepare a method that compares two integer matrices. The method will return true if and only if the two matrices contain exactly the same elements in their respective positions. Initialize the matrices internally. (Obviously, you need to put this method in a class and create an application to generate output.)

3) Design and implement and application that reads a sequence of up to 25 pairs of names and postal (ZIP) codes for individuals. Store the data in an object designed to store a first name (string), last name (string), and postal code (integer). Assume each line of input will contain two strings followed by an integer value, each separated by a tab character. Then, after the input has been read in, print the list in an appropriate format to the screen.

4) prepare a method named summit that accepts 2 integer arrays named gamma and delta. If the arrays are the same size the method will return an array of the sum of the corresponding elements.
If they are of different sizes the method will return an array of 10 elements where all of the elements are set to -1. (Obviously, you need to put this method in a class and create an application to generate output.)