I finally made the app to draw 10x10 map out of 50x50 pixel blocks.Now I can't imagine how to make a camera and lock it on character. I know how to make a character, but I just want to understand how locking the camera on character would look.
package tiled;
import org.newdawn.slick.*;
import org.newdawn.slick.state.*;
public class play extends BasicGameState {
int xSize = 10;
int ySize = 10;
[code]....
I want to implement new locking mechanism similar to like how threads locking or synchronized does the operation. Any inputs to implement out own locking mechanism ?
View Replies View RelatedI know that below code would put a lock on current instance of DemoClass, What I am not sure of is the role of lock on Object Class in second example. How does below works - Is it putting a lock on Object Class? If yes how will putting a lock on Object? I mean, locking DemoClass ensure no two threads access it concurrently, how does this apply to Object class?
private final Object lock = new Object();
synchronized (lock)
public class DemoClass
{
public void demoMethod(){
synchronized (this)
[code]....
I have a problem where i cant seem to get this simple delete command working. Everytime i run it it just locks the database and crashes
The id parameter exists in the database the database is small. Only a few tables. update commands work completely fine.
The id is an in and resulting command is - DELETE from Employees where ID = 2;
public static void EmployeeDeleteByID(int idIn){
Connection c = null;
Statement stmt = null;
try {
c = Connect();
c.setAutoCommit(false);
System.out.println("Opened database successfully");
[code]....
Error after running : java.sql.SQLException: database is locked
i want to have a JLabel that could "robotically" type words character by character.
View Replies View RelatedI use Eclipse (kepler version, with JDK 7) on MacBook Pro (Lion).I want to overwrite a line printed on my console. I used "" for that. I was expecting the cursor to go to the beginning of the line. Instead, it is going to the next line.
Code:
System.out.print("Superman
Sober");
Expected Output:
Soberman
Actual Output:
----------------
Superman
Sober
I want to do face detection on the camera.
View Replies View RelatedWhat I am trying is find the XOR value between charcters of a String here is my code
public static void main(String[] args) {
System.out.println(grayCode("100"));
}
public static String grayCode(String input){
StringBuilder temp=new StringBuilder();
temp.append(input.charAt(0));
for(int j=1;j<input.length();j++){
char previous=input.charAt(j-1);
char current=input.charAt(j);
char xorVal=(char)(previous^current);
temp.append(xorVal);
}
return temp.toString();
}
but I am not getting actual XOR value of two charcters that I am trying to get.
I am new to java and i want to create an application which detect an image which took from camera and to process it so that it can be verified ..for example number plate of the vehicle ..if i need to extract the numbers from the image ..
View Replies View RelatedWhere can I find tutorials about how you like have a big image, bigger than the specified screen, for the map of a game, and then you have camera view, the image is being printed on the screen continously as the character moves in different areas depending on what area of the map the character is in?
NOTE!!! I don't want to move objects around, I just want a camera view on a large image!
1: 3D space. How do i define the space where i will make my world? Is there a certain point that i will define as 0,0,0 or is there some other way.
2: Camera positioning. When i have the 3D space, how to i make it so that the camera will show that what i want it to show. Lets say il define its lokatios 30,50,100 and direction is NW, then how to i make it so that is see the SW direction from the point 30,50,100?
I am going to to develop an app for my final year project. basically the app is to show live video streaming on android phone from remote CCTV . The project is just in design phase i know the networking part i.e static ip for dvr etc but i dnt know how to get stream of data from dvr and how to control the CCTV camera i.e camera movement....
View Replies View RelatedI am developing some application in Java. The need is to continuously do a video streaming in the software. I am new to this and want to know how to do it.
View Replies View RelatedI am trying to build up the alphabet character by character. Like:
a
ab
abc
abcd
Well as of now I can only print out the alphabet with my loop like abcdefg...z.. So here is the code I am trying to use:
public void loop4() {
char alph = 'a';
while(alph <= 'z') {
System.out.println(alph);
alph++;
}
}
I have entered more than one character but output is only one character .....
class InputUser
{
public static void main(String arg[])
throws java.io.IOException
{
char ch;
ch=(char) System.in.read();
System.out.println(ch);
}
}
My program task is if we give a character... the display will print CHARACTER AS CHARACTER Shape
IF WE GIVE LETTER L... IT WILL PRINT LIKE THIS...
L
L
L
L L L L
How to i print out the first 6 character of a last name even if the last name is and X like Malcolm X or Sung Li. X and Li being the last names
View Replies View RelatedI'm trying to use the split method to split a string for a calculator, but it keeps throwing this Exception:
Exception in thread "main" java.util.regex.PatternSyntaxException: Dangling meta character '+' near index 0
+
public class exp {
private static String ques="88+12";
private static String [] splitCalc;
public static void main(String[] args) {
splitCalc = ques.split("+");
for(String s : splitCalc){
System.out.println(s);
}
}
}
import java.io.*;
public class Q2{
public static void main (String[] args) throws IOException,
ClassNotFoundException
[code]....
For this program, i successfully did create an output.txt, but i have some weird characters in front of "hello" when i open it in notepad or wordpad.
How To Take 1 Milion's Of Character As A Input
View Replies View RelatedI am trying to remove a character from string as below
public String reomveChar(String str, int n) {
if(0<=n & n<=(str.length()-1)){
//str.charAt(n)
char o=str.charAt(n);
return str.replace("o","");
//a.replace("o","");
}
return null;
}'
what is the best way to remove it.
If i call like
removeChar("hello", 1) i should see hllo.
When there are more than one way to do a challenge in java which one to choose as best way.
What is the criteria to decide one particular way of writing code is best among say 'n' different number of ways.
String charAt() method returns a particular Character at the specified index in the String.
How is this function implemented internally?. How a particular character can be retrieved from String?.
I am trying write a program that accept an input and present the input with every 5th character replaced with X (count spaces also).
For example:
input: "hello my name is mario"
outpu: "hellX my Xame Xi maXio"
I only manage to replace specific letters, e.g every "m" letter.
I am trying to swap given string first and last character. If I pass world i should get 'dorlw'
I found link and code [URL]....
String str="hello";
char[] charArray=str.toCharArray();
int indexOfLastChar=charArray.length-1;
for(int i=0;i<charArray.length/2;i++){
char temp=chatArray[i];
charArray[1]=charArray[indexOfLastChar-i];
charArray[indexOfLastChar-i]=temp;
}
String reversedStr=new String(charArray)
System.out.println("reversed string"+str+reversedStr);
I wonder Is there is any easy simple way to do it.
I noticed it is a huge success to have the backgrounds of games move and the character just move up and down and dodge obstacles.How Do I make a background that scrolls horizontally to the left? I know how to keep the character in place with up and down to move, but not sure how to go about making the background move with obstacles.
View Replies View RelatedWhat I'm trying to do is say if the array contains the character a, then output: this letter is already in the array. I tried
if(arrayList.contains(a)) {
System.out.println("This is already in the array!");
}
but it's not working. What should I use?