You want to put the second input line – to take the configuration1 into a for loop to run T number of times and display it. public static void main(String[] args) { int T, N; System.out.println(“Enter number of test cases: “); Scanner in = new Scanner(System.in); T = in.nextInt(); String configuration1; for (int i = … Read more
This is with Text Input Layout in xml Layout file <android.support.design.widget.TextInputLayout android:id=”@+id/input_layout_password” android:layout_width=”match_parent” android:layout_height=”wrap_content”> <EditText android:id=”@+id/textView_password” android:layout_width=”match_parent” android:layout_height=”wrap_content” android:hint=”@string/password” android:inputType=”textPassword” /> </android.support.design.widget.TextInputLayout> Your activity should be something like this. passwordTIL = (TextInputLayout) findViewById(R.id.input_layout_password); passwordET = (EditText) findViewById(R.id.textVIew_password); passwordET.addTextChangedListener(new SigninTextWatcher(passwordET) //you can use this for username too or to check if the email format is correct … Read more
No, HashSet is not thread-safe. You can use your own synchronization around it to use it in a thread-safe way: boolean wasAdded; synchronized(hset) { wasAdded = hset.add(thingToAdd); } If you really need lock-free performance, then you can use the keys of a ConcurrentHashMap as a set: boolean wasAdded = chmap.putIfAbsent(thingToAdd,whatever) == null; Keep in mind, … Read more
Why did they pass the src object to FileInputStream? Because FileInputStream will need a File to instantiate. src is an instance of File. Why did they pass FileInputStream object to xssfworkbook? Because XSSFWorkbook needs a FileInputStream to instantiate. fis is a FileInputStream. Why they did’nt pass any objects for xssfsheet? Because the sheet can be … Read more
Your alternative suggestion public static HashFunction crc32c() { return new Crc32cHashFunction() } would create a new Crc32cHashFunction instance each time crc32c() is called. If there is no specific need for a new instance to be returned by each call, it is more efficient to return the same instance in each call. Using the static final … Read more
Variable next is null when you call next.setOnClickListener() probably R.id.prosseguir is a wrong identifier solved The function is not working and is making the program crash when I start the Activity [duplicate]
a fast google search popped up this example https://www.mkyong.com/java8/java-8-stream-read-a-file-line-by-line/. for each line you get a String. split the string on whitespace: String[] lineArr = line.split(” “); Then use the 3 values in the array to create your stuff. easy peasy 🙂 0 solved Taking input of a graph from text file in java till the … Read more
I just had to place the cpp file name in the Android.mk file… This is my first time so sorry… Fixed code: C++ #include <string.h> #include <jni.h> extern “C” { JNIEXPORT jint JNICALL Java_net_pixeldroidof_addonedit_MainActivity_getScreenY(JNIEnv* env, jobject thiz) { int number = 30; return number; } } Java public native static int getScreenY(); //And you can … Read more
public static void selectionSort1(int[] x) { for (int i=0; i<x.length-1; i++) { for (int j=i+1; j<x.length; j++) { if (x[i] > x[j]) { // Exchange elements int temp = x[i]; x[i] = x[j]; x[j] = temp; } } } } solved Java Selection sort [closed]
The problem is in the 4th from bottom line of code: System.out.println((noSuchProvdr.getMessage()); ^ Remove the extra parenthesis from there to make it System.out.println(noSuchProvdr.getMessage()); Edit: If the compiler is telling you java.security.NoSuchProviderException is never thrown in body of corresponding try statement, remove this last catch block catch (NoSuchProviderException noSuchProvdr) { System.out.println((noSuchProvdr.getMessage()); } 3 solved Making RSA … Read more
You only “flush” the output in Java. I suspect you mean, when to discard the rest of the line. To do this you can call input.nextLine(); You need to do this after nextInt() as you expect to be reading from the next line. solved how and where to use standard input flush in java? [closed]
Links in wicket work by calling the urlFor method of the request cycle. This includes a URL renderer which all URLs are passed through when they are being generated. If you: Write a sub class for UrlRenderer to add your themePreview parameter to all urls if it was a parameter in the request Write a … Read more
First of all a few things to help you with your code: Try following atleast a few conventions (tab your code in for example) In your if statements and foor loops you are handeling way too many thing. If the first statement didn’t catch that the value is under 60, there is no need to … Read more
You may use this inDaylightTime : link to check whether you are in daylight saving. For example : if (tz1.inDaylightTime) cal.add(Calendar.HOUR,1); 3 solved Summer and wintertime JAVA [closed]
It is setting default text. I’ve done it as bellow. public class BisectionIterations extends JFrame implements ActionListener { private JTextArea textArea = new JTextArea(“This text should display”); private JScrollPane scrollPane = new JScrollPane(textArea); private JButton closeBtn = new JButton(“Close”); //Array Double[] iterationBi = new Double[1000]; public BisectionIterations(Double[] iter) { this.iterationBi = iter; setLayout(new BorderLayout()); setSize(500, … Read more