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I can’t find the Android keytool
... follow these steps:
1) Build > Generate Signed APK
2) Choose "Create New...", choose the path to the keystore, and enter all the required data
3) After your keystore (your_keystore_name.jks) has been created, you will then use it to create your first signed apk at a destination of your choosi...
How to add an integer to each element in a list?
...
new_list = [x+1 for x in my_list]
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How do I perform the SQL Join equivalent in MongoDB?
...f Mongo 3.2 the answers to this question are mostly no longer correct. The new $lookup operator added to the aggregation pipeline is essentially identical to a left outer join:
https://docs.mongodb.org/master/reference/operator/aggregation/lookup/#pipe._S_lookup
From the docs:
{
$lookup:
...
How to open a second activity on click of button in android app
...add this method:
public void sendMessage(View view) {
Intent intent = new Intent(FromActivity.this, ToActivity.class);
startActivity(intent);
}
And the most important thing: don't forget to define your activity in manifest.xml
<activity>
android:name=".ToActivity"
andr...
SQLite in Android How to update a specific row
...
First make a ContentValues object :
ContentValues cv = new ContentValues();
cv.put("Field1","Bob"); //These Fields should be your String values of actual column names
cv.put("Field2","19");
cv.put("Field2","Male");
Then use the update method, it should work now:
myDB.update(Ta...
java: run a function after a specific number of seconds
...
new java.util.Timer().schedule(
new java.util.TimerTask() {
@Override
public void run() {
// your code here
}
},
5000
);
EDIT:
javadoc says:
...
Can an interface extend multiple interfaces in Java?
Can an interface extend multiple interfaces in Java? This code appears valid in my IDE and it does compile:
7 Answers
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What is “the inverse side of the association” in a bidirectional JPA OneToMany/ManyToOne association
....java ,on Customer field <Remove mappedby from Customer.java> then a new table will be created something like Order_Customer which will have 2 columns. ORDER_ID and CUSTOMER_ID.
– HakunaMatata
Aug 10 '13 at 16:08
...
How do you return a JSON object from a Java Servlet
...est request, HttpServletResponse response) {
// ...
String json = new Gson().toJson(someObject);
response.setContentType("application/json");
response.setCharacterEncoding("UTF-8");
response.getWriter().write(json);
}
That's all.
See also:
How to use Servlets and Ajax?
What is...
Include another JSP file
... that
<jsp:include page='about.jsp'>
<jsp:param name="articleId" value=""/>
</jsp:include>
and
in about.jsp you can take the paramter
<%String leftAds = request.getParameter("articleId");%>
...