jcie ching

hi i think i found the error but now im getting "illegal start of expression"
near "public int compareTo(Object o)" and "public boolean equals(Object o)"


any suggestions?
[ February 08, 2006: Message edited by: jcie ching ]
[ February 09, 2006: Message edited by: jcie ching ]

thanks for your reply, i followed what u said and still some errors:

import java.io.*; class Student implements Comparable, Cloneable { private String firstName, lastName,name1, name2,other; private int credits; private double gradePointAverage; private boolean nullStudent = false; public Object clone() { try { return super.clone(); } catch (CloneNotSupportedException ex) { return null; } } public int compareTo(Object o) { Student otherStudent = (Student name1); String name1 = lastName + firstName; String name2 = otherStudent.lastName + otherStudent.firstName; return name1.compareTo(name2); } } public boolean equals(Object o) { if (!(name1 instanceof Student)) return false; Student o = (Student); return name1.equals(o.name1) && name2.equals(o.name2); } public boolean isNull() { return nullStudent; } public void input(BufferedReader reader) throws IOException { String line = reader.readLine(); if (line == null) { nullStudent = true; return; } } public void output() { System.out.println(lastName + ", " + firstName + " " + credits + " " + gradePointAverage); } }

the error im getting is "class/interface expected"..
im just really new in java hope u dont mind =)
any more suggestions? thanks

Hi thanks for your reply, i got to fix the error already but on the second part of the program where my most errors and confusion is going on..please help
I need to write a program that that reads in a student record from a file.
I need to use method compareTo that compares two student records. Only the names of the students should be compared. The last name is more significant than the first one. The methid should return -1 if the first name is less than the second name, 0 if they are equal, and 1 if the first name is greater than the second one. A method equals that compares two students. Again only the names should be compared (as it is in the compareTo method.)

here what i got so far:

import java.io.*; class Student implements Comparable, Cloneable { private String firstName, lastName,name1, name2,other; private int credits; private double gradePointAverage; private boolean nullStudent = false; public Object clone() { Student otherStudent = (Student)other; String name1 = lastName + firstName; String name2 = otherStudent.lastName + otherStudent.firstName; } public int compareTo(Object other) { Student otherStudent = (Student)other; String name1 = lastName + firstName; String name2 = otherStudent.lastName + otherStudent.firstName; return name1.compareTo(name2); } public boolean equals(Comparable other) { if (!(other instanceof Student)) return false; Student o = (Student)other; return name1.equals(o.name1) && name2.equals(o.name2); } public boolean isNull() { return nullStudent; } public void input(BufferedReader reader) throws IOException { String line = reader.readLine(); if (line == null) { nullStudent = true; return; } } public void output() { System.out.println(lastName + ", " + firstName + " " + credits + " " + gradePointAverage); } }

the error im getting are
invonvertible types - what does it mean?
thanks

I need to do a program that determines whether a file of student records is in sorted order or not. This program should consist of two classes.
In the first class it should contain a main method that prompts the user for the name of the input file.If the file cannot be opened, it should continue to reprompt the user for the correct name, until the file can be opened. The file should be read and the program should verify that the file is in ascending order. If it is not, an appropriate error message should be displayed and the program should terminate. As the student records are read in they should be displayed on the screen.I only doing first class because im already getting an error, i wanted to to thid first before i move on to the secomd class method.

I admit this is a project but i need some guidance please..
here is the code that i just did:

import java.io.*; import java.awt.*; public class test1 { // Create a single shared BufferedReader for keyboard input private static BufferedReader stdin = new BufferedReader( new InputStreamReader( System.in ) ); // Program execution starts here public static void main ( String [] args ) throws IOException { // Prompt the user System.out.print( "Enter the filename: " ); // Prompt the user for a file name String fileName = stdin.readLine(); // get a file name from the user // java.io.File file = new java.io.new File( fileName ); // create a File object if ( file.exists() ) // check that the file exists { // Instance variables private String firstName, lastName; // Default constructor public Name1() { this.firstName = ""; this.lastName = ""; } // Constructor that fills in supplied names public Name1(String firstName, String lastName) { this.firstName = firstName; this.lastName = lastName; } // Returns whether two names are the same using a // case-insensitive comparison public boolean equals(Name1 other) { return lastName.equalsIgnoreCase(other.lastName) && firstName.equalsIgnoreCase(other.firstName); } // Reads in a name from the supplied reader, parses it // into a first and last name public void input(BufferedReader reader) throws IOException { String wholeName = reader.readLine(); if (wholeName == null) return; int space = wholeName.indexOf(' '); if (space < 0) { firstName = ""; lastName = ""; return; } firstName = wholeName.substring(0, space); lastName = wholeName.substring(space + 1); } // Outputs the name in the format last name, first name public void output(PrintStream writer); { writer.println(lastName + ", " + firstName); } } } }

Im getting an error : illegal start of expression

sorry im new to java, really trying to understand it..
please help .. thanks
[ February 08, 2006: Message edited by: jcie ching ]