Question
You are given the class Person.java. Using DataOutputStream and following the example given in Chapter 17 Example TestDataStream.java , write a Java program that creates
You are given the class Person.java. Using DataOutputStream and following the example given in Chapter 17 Example TestDataStream.java , write a Java program that creates three instances of the class Person and writes their attributes to a file named people.dat. This means you must create three objects of type Person with different attribute information. Write a second program (or continue on with the first after closing the written file) that reads from people.data using DataInputStream, recreates the Person Objects and prints them to the console using System.out.println and the Person.toString method
/**GIVEN EXAMPLE * ITEC 3150 - Text File I/O Example Person Class - This is the object we will * read and write to file * * @author cjohns25 * */ public class Person { public String firstName; public String lastName; public int idNum; public String city; /** * Default constructor used to create empty attributes */ public Person() { firstName = ""; lastName = ""; idNum =0; city =""; } /** * @param firstName * @param lastName * @param idNum * @param city */ public Person(String firstName, String lastName, int idNum, String city) { this.firstName = firstName; this.lastName = lastName; this.idNum = idNum; this.city = city; } /* (non-Javadoc) * @see java.lang.Object#toString() */ @Override public String toString() { return "Person [firstName=" + firstName + ", lastName=" + lastName + ", idNum=" + idNum + ", city=" + city + "]"; } /** * @return the firstName */ public String getFirstName() { return firstName; } /** * @param firstName the firstName to set */ public void setFirstName(String firstName) { this.firstName = firstName; } /** * @return the lastName */ public String getLastName() { return lastName; } /** * @param lastName the lastName to set */ public void setLastName(String lastName) { this.lastName = lastName; } /** * @return the idNum */ public int getIdNum() { return idNum; } /** * @param idNum the idNum to set */ public void setIdNum(int idNum) { this.idNum = idNum; } /** * @return the city */ public String getCity() { return city; } /** * @param city the city to set */ public void setCity(String city) { this.city = city; } }
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