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Need to make a Counter using enum ordinals

I need to make a counter array for a Rock Paper Scissors game but can not figure out how to make user input call the enum, and i need to make the moves for the game a counter for them to be used and compared to.
This is my enum
public enum Moves {
Rock(1),
Paper(2),
Scissors(3),
Lizard(4),
Spock(5), ;
private int countOf = 0;
private int moveVal;
private ArrayList<Moves> movesList = new ArrayList<>();
Moves(int moveVal) {
}
public int getmoveVal() {
return moveVal;
}
public int getCountOf() {
for(Moves moveList : Moves.values()) {
countOf++;
}
return countOf;
}
And this is my class that would call it
public static void main(String[] args) {
RockPaperScissorGame rsg = new RockPaperScissorGame(3);
Moves move[] = Moves.values();
int playerMove = 0;
for(int i = 0; i < move.length; i++) {
}
boolean continueGame = true;
#SuppressWarnings("resource")
Scanner keyboard = new Scanner(System.in);
while(continueGame)
{
System.out.println(rsg.moveChoices());
System.out.println("Enter Move:(1,2,3,4 or 5):");
playerMove = keyboard.nextInt();
rsg.playRound(move);
System.out.printf("AI %s!%n", rsg.getAIOutcome().toString());
System.out.printf("Player %s!%n", rsg.getPlayerOutcome().toString());
System.out.println(rsg.moveOutcome());
System.out.println(rsg.currentScore());
if(rsg.isGameOver())
{
System.out.println(rsg.currentWinTotal());
System.out.println("Do you want to Play Again(1 - Yes , 2 - No):");
int answer = keyboard.nextInt();
if(answer == 2)
{
continueGame = false;
}
else
{
rsg.reset();
}
}
}

You can iterate through values to find a Move matching that moveVal:
public Move fromMoveVal(int moveVal) {
for (Move m : Move.values()) if (m.moveVal == moveVal) return m;
return null;
}

NZEC error for ACODE spoj

I am solving the Acode problem of SPOJ.It is a simple Dp problem here
This is my solution:
//http://www.spoj.com/problems/ACODE/
import java.util.Scanner;
//import java.util.Math;
public class Acode {
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
String encodedString = sc.next();
while (!encodedString.equals("0")) {
long number = numOfDecodings(encodedString);
System.out.println(number);
encodedString = sc.next();
}
return;
}
public static long numOfDecodings(String encodedString)
{
int lengthOfString = encodedString.length();
long decode[] = new long[lengthOfString];
decode[0] = 1;
if (isCurrentTwoDigitsValid(encodedString, 1)) {
decode[1] = 2;
} else {
decode[1] = 1;
}
for (int i=2; i<lengthOfString; i++) {
if (isCurrentTwoDigitsValid(encodedString, i)) {
decode[i] = decode[i-2] + decode[i-1];
} else {
decode[i] = decode[i-1];
}
}
return decode[lengthOfString-1];
}
public static boolean isCurrentTwoDigitsValid(String encodedString, int startIndex)
{
char c1 = encodedString.charAt(startIndex);
char c2 = encodedString.charAt(startIndex-1);
if ( (c2=='1') || (c2=='2' && c1<='6')) {
return true;
} else {
return false;
}
}
}
But I am getting an NZEC error when I try to submit it.I tested it for large values too and it is not breaking.I am not understanding how else to improve it.

When input size is 1 you get an error in
if (isCurrentTwoDigitsValid(encodedString, 1)) {
decode[1] = 2;
} else {
decode[1] = 1;
}
because of accessing out of the decode array bounds.
You treat 0 as a valid number, but it's not. For example, the correct answer for input "10" is 1, not 2.

Java Array Bound Exception

I'm trying to make a program for a password security, but many times I get Java Array Index Out of Bounds Exception...I tried to fix, but nothing, this is my code:
import java.util.Arrays;
public class BruteForce {
public static void main(String[] args) {
String password = "aaaa";
char[] charset = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".toCharArray();
BruteForce bf = new BruteForce(charset, 1);
String attempt = bf.toString();
while (true) {
if (attempt.equals(password)) {
System.out.println("Password Found: " + attempt); // low security
break;
}
attempt = bf.toString();
System.out.println(attempt);
bf.increment();
}
}
private char[] cs;
private char[] cg;
public BruteForce(char[] characterSet, int guessLength) {
cs = characterSet;
cg = new char[guessLength];
Arrays.fill(cg, cs[0]);
}
public void increment() {
int index = cg.length - 1;
while (index >= 0) {
if (cg[index] == cs[cs.length - 1]) {
if (index == 0) {
cg = new char[cg.length + 1];
Arrays.fill(cg, cs[0]);
break;
} else {
cg[index] = cs[0];
index--;
}
} else {
cg[index] = cs[Arrays.binarySearch(cs, cg[index]) + 1];
break;
}
}
}
#Override
public String toString() {
return String.valueOf(cg);
}
}
When I try to add special char(s):
import java.util.Arrays;
public class BruteForce
{
public static void main(String[] args)
{
String password = "aaaa";
char[] charset = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz.##".toCharArray();
BruteForce bf = new BruteForce(charset, 1);
String attempt = bf.toString();
while (true)
{
if (attempt.equals(password))
{
System.out.println("Password Found: " + attempt); // low security
break;
}
attempt = bf.toString();
System.out.println(attempt);
bf.increment();
}
}
private char[] cs;
private char[] cg;
public BruteForce(char[] characterSet, int guessLength)
{
cs = characterSet;
cg = new char[guessLength];
Arrays.fill(cg, cs[0]);
}
public void increment()
{
int index = cg.length - 1;
while(index >= 0)
{
if (cg[index] == cs[cs.length-1])
{
if (index == 0)
{
cg = new char[cg.length+1];
Arrays.fill(cg, cs[0]);
break;
}
else
{
cg[index] = cs[0];
index--;
}
}
else
{
cg[index] = cs[Arrays.binarySearch(cs, cg[index]) + 1];
break;
}
}
}
#Override
public String toString()
{
return String.valueOf(cg);
}
}
And I get something like this:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: -65

The difference between
"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
and
"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz.##"
is that in the first case, the characters are in ascending order (characters in java have a value).
Arrays.binarySearch requires the array to be in ascending order.
If you use
"#.0123456789#ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
instead (or use Arrays.sort in the BruteForce constructor) it should work.
Always remember to post the exact code that you are using!

Java help! implementing a 2d array of a certain object, the object has multiple private data types and objects

I'm trying to make a 2d array of an object in java. This object in java has several private variables and methods in it, but won't work. Can someone tell me why and is there a way I can fix this?
This is the exeception I keep getting for each line of code where I try to initialize and iterate through my 2d object.
"Exception in thread "main" java.lang.NullPointerException
at wumpusworld.WumpusWorldGame.main(WumpusWorldGame.java:50)
Java Result: 1"
Here is my main class:
public class WumpusWorldGame {
class Agent {
private boolean safe;
private boolean stench;
private boolean breeze;
public Agent() {
safe = false;
stench = false;
breeze = false;
}
}
/**
* #param args
* the command line arguments
* #throws java.lang.Exception
*/
public static void main(String [] args) {
// WumpusFrame blah =new WumpusFrame();
// blah.setVisible(true);
Scanner input = new Scanner(System.in);
int agentpts = 0;
System.out.println("Welcome to Wumpus World!\n ******************************************** \n");
//ArrayList<ArrayList<WumpusWorld>> woah = new ArrayList<ArrayList<WumpusWorld>>();
for (int i = 0 ; i < 5 ; i++) {
WumpusWorldObject [] [] woah = new WumpusWorldObject [5] [5];
System.out.println( "*********************************\n Please enter the exact coordinates of the wumpus (r and c).");
int wumpusR = input.nextInt();
int wumpusC = input.nextInt();
woah[wumpusR][wumpusC].setPoints(-3000);
woah[wumpusR][wumpusC].setWumpus();
if ((wumpusR <= 5 || wumpusC <= 5) && (wumpusR >= 0 || wumpusC >= 0)) {
woah[wumpusR][wumpusC].setStench();
}
if (wumpusC != 0) {
woah[wumpusR][wumpusC - 1].getStench();
}
if (wumpusR != 0) {
woah[wumpusR - 1][wumpusC].setStench();
}
if (wumpusC != 4) {
woah[wumpusR][wumpusC + 1].setStench();
}
if (wumpusR != 4) {
woah[wumpusR + 1][wumpusC].setStench();
}
System.out.println( "**************************************\n Please enter the exact coordinates of the Gold(r and c).");
int goldR = input.nextInt();
int goldC = input.nextInt();
woah[goldR][goldC].setGold();
System.out.println("***************************************\n How many pits would you like in your wumpus world?");
int numPits = input.nextInt();
for (int k = 0 ; k < numPits ; k++) {
System.out.println("Enter the row location of the pit");
int r = input.nextInt();
System.out.println("Enter the column location of the pit");
int c = input.nextInt();
woah[r][c].setPit();
if ((r <= 4 || c <= 4) && (r >= 0 || c >= 0)) {
woah[r][c].setBreeze();
}
if (c != 0) {
woah[r][c - 1].setBreeze();
}
if (r != 0) {
woah[r - 1][c].setBreeze();
}
if (c != 4) {
woah[r][c + 1].setBreeze();
}
if (r != 4) {
woah[r + 1][c].setBreeze();
}
}
for (int x = 0 ; x < 4 ; x++) {
int j = 0;
while (j < 4) {
agentpts = agentpts + woah[x][j].getPoints();
Agent [] [] k = new Agent [4] [4];
if (woah[x][j].getWumpus() == true) {
agentpts = agentpts + woah[x][j].getPoints();
System.out.println("You just got ate by the wumpus!!! THE HORROR!! Your score is " + agentpts);
}
if (woah[x][j].getStench() == true) {
k[x][j].stench = true;
System.out.println("You smell something funny... smells like old person.");
}
if (woah[x][j].getBreeze() == true) {
k[x][j].breeze = true;
System.out.println("You hear a breeze. yeah");
}
if (woah[x][j].getPit() == true) {
agentpts = agentpts + woah[x][j].getPoints();
System.out.println("AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAH! you dumb bith, your dead now.");
}
// if breeze or stench, if breeze and stench, if nothing, etc then move.
k[x][j].safe = true;
// if(k[i][j].isSafe()!=true){
// } else { }
}
}
}
}
}
Here is my class object that I'm trying to implement:
package wumpusworld;
/**
*
* #author Jacob
*/
public class WumpusWorldObject {
private boolean stench;
private boolean breeze;
private boolean pit;
private boolean wumpus;
private boolean gold;
private int points;
private boolean safe;
public WumpusWorldObject(){
}
public boolean getPit() {
return pit;
}
public void setPit() {
this.pit = true;
}
public boolean getWumpus() {
return wumpus;
}
public void setWumpus() {
this.wumpus = true;
}
public int getPoints() {
return points;
}
public void setPoints(int points) {
this.points = points;
}
public boolean getStench() {
return stench;
}
public void setStench() {
this.stench = true;
}
public boolean getBreeze() {
return breeze;
}
public void setBreeze() {
this.breeze = true;
}
public boolean getSafe() {
return safe;
}
public void setSafe() {
this.safe = true;
}
public void setGold(){
this.gold=true;
}
}

Creating array doesn't mean it will be automatically filled with new instances of your class. There are many reasons for that, like
which constructor should be used
what data should be passed to this constructor.
This kind of decisions shouldn't be made by compiler, but by programmer, so you need to invoke constructor explicitly.
After creating array iterate over it and fill it with new instances of your class.
for (int i=0; i<yourArray.length; i++)
for (int j=0; j<yourArray[i].length; j++)
yourArray[i][j] = new ...//here you should use constructor

AClass[][] obj = new AClass[50][50];
is not enough, you have to create instances of them like
obj[i][j] = new AClass(...);
In your code the line
woah[wumpusR][wumpusC].setPoints(-3000);
must be after
woah[wumpusR][wumpusC] = new WumpusWorldObject();
.

How to obscure Scanner input text? [duplicate]

This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
Hide input on command line
I'm making a password security checker program and my question is odd in that my program runs just fine. What I'm wondering is whether there is any way of making text entered to the console appear as it would in a password field. i.e the word entered will appear as "****" BEFORE the user presses the return key.
I am aware that JFrame has a JPasswordField method but I don't think that helps me when in just using Scanner.
Here is my code:
import java.util.Scanner;
public class SecurityCheckerMain {
static String enteredPassword;
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.println("Please enter your password: ");
enteredPassword = input.nextLine();
Checker tc = new Checker(enteredPassword);
tc.checkSecurity();
}
}
public class Checker {
//number of chars : the Higher the Better("password must be greater than 8 chars"){done}
//combination of uppercase and lowercase{done}
//contains numbers{done}
//non repeated characters (every char is different ascii char){done}
//is not a consecutive password ie 123456789 or 987654321{done}
//is not blank ("[space]"){done}
int pLength;
final int MAX_STRENGTH = 10;
int pStrength = 0;
String pass;
public Checker(String pwd){
pass = pwd;
pLength = pwd.length();
}
public void checkSecurity(){
if(pass.isEmpty()){
System.out.println("Password Field is Empty! Password is Very Insecure.");
}
if(pLength >= 8){
pStrength++;
if(pLength >= 12){
pStrength++;
if(pLength >= 16){
pStrength++;
}
}
}
if(hasUpperCase(pass) && hasLowerCase(pass)){
pStrength+=2;
}
if(containsNumbers(pass)){
pStrength+=2;
}
if(hasNoRepeats(pass)){
pStrength+=2;
}
if(!containsConsecutiveNums(pass)){
pStrength++;
}
System.out.println("Your password strength is rated at " + pStrength +"/" + MAX_STRENGTH);
}
//Component Methods
public boolean hasUpperCase(String str){
for(int i = 0; i<pLength; i++){
if(Character.isUpperCase(str.charAt(i))){
return true;
}
}
return false;
}
public boolean hasLowerCase(String str){
for(int i = 0; i<pLength; i++){
if(Character.isUpperCase(str.charAt(i))){
return true;
}
}
return false;
}
public boolean containsNumbers(String str){
for(int i = 0; i<pLength; i++){
if(Character.isDigit(str.charAt(i))){
return true;
}
}
return false;
}
public boolean hasNoRepeats(String str){
for(int i = 0; i<pLength; i++)
if(containsChar(str, str.charAt(i))){
return false;
}
return true;
}
public boolean containsChar(String s, char search) {
if (s.length() == 0)
return false;
else
return s.charAt(0) == search || containsChar(s.substring(1), search);
}
public boolean containsConsecutiveNums(String str){
for(int i = 0; i<pLength; i++){
if(Character.isDigit(str.charAt(i))){
if(str.charAt(i)-1 == str.charAt(i-1) || str.charAt(i)+1 == str.charAt(i+1)){
return true;
}
}
}
return false;
}
}

You can use Console.readPassword instead.
readPassword(String fmt, Object... args)
Provides a formatted prompt, then reads a password or passphrase from
the console with echoing disabled
public class SecurityCheckerMain {
static String enteredPassword;
public static void main(String[] args) {
Console console = System.console();
enteredPassword =
new String(console.readPassword("Please enter your password: "));
Checker tc = new Checker(enteredPassword);
tc.checkSecurity();
}