Question

What is going on with this exception and how do I fix it?

Answer 1

import java.util.*; //needed to use methods in Arrays class

public class HW11 {
/*
* create a method called longest() that takes in three String arguments
* return the longest String
* for example, if the arguments are "cat", "bird", "HORSE"
* the method return the String "HORSE"
*/
//TODO: write the method here
//this is the constructor method for the longest class
public String longest(String word1, String word2, String word3) {
int a = word1.length();
int b = word2.length();
int c = word3.length();
String F=word1.toUpperCase();
String G=word1.toUpperCase();
String H=word1.toUpperCase();
String Q=("exception ought to be thrown, a magician should decide Tie.");

if (a>b&&a>c) {
return F;
};
if (b>a&&b>c) {
return G;
}
if (c>a&&c>b) {
return H;
}
else
return Q;

}




/*
* create a method reverseOrder() that takes in three String arguments
* first, capitalize all the words
* then put the Strings in REVERSE alphabetical order
* return an array of the capitalized Strings in reverse order
* for example, if the arguments are "cat", "bird", "HORSE"
* the method should return the array: ["HORSE", "CAT", "BIRD"]
*
* hint: the .toUpperCase() method in the String class and the .sort() method in the Arrays class might be useful
* the Arrays class is located in the java.util package
*/
//TODO: write the method here
public static String reverseOrder(String word1, String word2, String word3) {
int a = word1.length();
int b = word2.length();
int c = word3.length();

String gammaNablaF;
String gammaNablaG;
String gammaNablaH;

gammaNablaF= word1.toUpperCase();
gammaNablaG= word2.toUpperCase();
gammaNablaH= word3.toUpperCase();

String Possibility1;
String Possibility2;
String Possibility3;
String Possibility4;
String Possibility5;
String Possibility6;

Possibility1 = gammaNablaH + ", " + gammaNablaG + ", " + gammaNablaF;
Possibility2 = gammaNablaG + ", " + gammaNablaH + ", " + gammaNablaF;
Possibility3 = gammaNablaG + ", " + gammaNablaF + ", " + gammaNablaH;
Possibility4 = gammaNablaF + ", " + gammaNablaG + ", " + gammaNablaH;
Possibility5 = gammaNablaF + ", " + gammaNablaH + ", " + gammaNablaG;
Possibility6 = gammaNablaH + ", " + gammaNablaF + ", " + gammaNablaG;


// 3 Permute 3... there are 6 possible String length orders, ignoring ties.

if (a>b&&a>c) {
if (b>c) {
return Possibility1;}
else if (c>b) {
return Possibility2;}
else {
return Possibility1;}}
if (b>a&&b>c) {
if (a>c) {
return Possibility6;}
else if (c>a) {
return Possibility5;}
else {
return Possibility5;}}
if (c>a&&c>b) {
if (b>c) {
return Possibility4;}
else if (c>b) {
return Possibility3;}
else {
return Possibility3;}}
else {
return Possibility1;}


}




/*
* create a method lastLetters() that takes in three String arguments
* return a new String made up of the last letter of each argument, in capital letters
* for example, if the arguments are "cat", "bird", "HORSE"
* the method should return the String "TDE"
*/
//TODO: write the method here




//the main method...don't modify this
public static void main(String args[]) {
System.out.print("Please enter a word: ");
String word1 = StdIn.readString();
System.out.print("Please enter another word: ");
String word2 = StdIn.readString();
System.out.print("Enter one last word, please: ");
String word3 = StdIn.readString();

System.out.println("word1: " + word1);
System.out.println("word2: " + word2);
System.out.println("word3: " + word3);

//this code tests the new methods
System.out.println("The longest word is: " + longest(word1,word2,word3));
System.out.println("Here are the words in reverse alphabetical order:");
String[] r = reverseOrder(word1,word2,word3);
System.out.println(Arrays.toString(r));
System.out.println("The last letters of the words forms the word: " + lastLetters(word1,word2,word3));
}

} //end HW11

Answer 2

Cannot make a static reference to the non-static method longest(java.lang.String, java.lang.String, java.lang.String) from the type HW11

Wat does that mean?

Answer 3

main is static, your other class isn't.

Answer 4

Also you never call your homework class, you called it's constructor "Longest..." I would also do all the calculations within the HW11 class, or create a hw11 object and work it in your main....