$($For Part $1$ and Part $2,$ you must Use Datalnputstream and

DataOutputstream.$)$

$1.)$ Write Integers to a File Using DataOutputitream$-$This time build a class WriteInts. This class, when instantiated, will create a new file and write an array of integers to this new file. All the code to write the data to the file goes in the Constructor.

$[$i$.$e$.$ Ill This code goes in main$()$

int myAril $=\{16,31,90,45,89\}$;

Writelnts wi $=$ new Writelnts$("$mydata$.$dat", myAr$)$; $]$

$2.)$ Read Integers from a Pile Using Datalnputitream $-$ This time build a class Readints. This class, when instantiated, will read the integers from the file given, and print them to the Console. All the code to write the data to the file goes in the Constructor.

$[$i$.$e$.$ I$/$ This code goes in main$()$

Readlnts ri $=$ new Readlnts$("$mydata$.$dat"$)$; $]$

$3.)$ Write a String to a Dile using PrintStream $-$ This time build a class WriteString. This class, when instantiated, will write a string to a file by using a PrintStream object connected to a FileOutputstream Object.

$[$i$.$e$.$ I$/$ This code goes in main$()$

WriteString ws $=$ new WriteString$("11.$txt$",$ Hello world"$)$;$]$