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Closing Database Connections in Java
...aseConnection(); Statement statement = connection.createStatement()) {
String sqlToExecute = "SELECT * FROM persons";
try (ResultSet resultSet = statement.execute(sqlToExecute)) {
if (resultSet.next()) {
System.out.println(resultSet.getString("name");
}
}
} ca...
Update a record without first querying?
...sons, you may want to pass in variables instead of a single hard coded SQL string. This will allow SQL Server to cache the query and reuse with parameters. Example:
dataEntity.ExecuteStoreCommand
("UPDATE items SET itemstatus = 'some status' WHERE id = {0}", new object[] { 123 });
UPDATE - f...
UIWebView open links in Safari
...uest navigationType:(UIWebViewNavigationType)navigationType {
static NSString *regexp = @"^(([a-zA-Z]|[a-zA-Z][a-zA-Z0-9-]*[a-zA-Z0-9])[.])+([A-Za-z]|[A-Za-z][A-Za-z0-9-]*[A-Za-z0-9])$";
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regexp];
if ([predicat...
How to customize the back button on ActionBar
...Backup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/MyCustomTheme" >
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How do I convert datetime to ISO 8601 in PHP
...
I would note that using DATE_ISO8601 produces a date string which is slightly different than ISO8601 (the colon is missing in the TZ, ISO8601 expects times to be all with OR all without the colon, not a mixture) - date('c') does produces a strict ISO 8601 valid date - This coul...
How to implement an android:background that doesn't stretch?
...its in height and keeps aspect ratio
android:contentDescription="@string/image"
android:src="@drawable/your_image" />
<LinearLayout
android:id="@+id/main_root"
android:layout_width="match_parent"
android:layout_height="match_parent"
android...
What is the actual use of Class.forName(“oracle.jdbc.driver.OracleDriver”) while connecting to a dat
... = Class.forName("oracle.jdbc.driver.OracleDriver");
// and
Class<?> stringClass = Class.forName("java.lang.String");
Class.forName("com.example.some.jdbc.driver") calls show up in legacy code that uses JDBC because that is the legacy way of loading a JDBC driver.
From The Java Tutorial:
In ...
What Computer Science concepts should I know? [closed]
...ncepts that helped my development (intellect and code):
Lexing, Parsing, String matching, Regex
Memoization
encapsulation/scoping/closures
caching
Recursion
Iterators/Generators
Functional programming - John Hughes' amazing article had me at "why"
These are whole domains of discrete math, but...
JPA: unidirectional many-to-one and cascading delete
... private long id;
@Column(nullable = false, length = 50)
private String firstName;
}
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Removing white space around a saved image in matplotlib
...bbox_inches='tight')
You'll have to put the argument to bbox_inches as a string, perhaps this is why it didn't work earlier for you.
Possible duplicates:
Matplotlib plots: removing axis, legends and white spaces
How to set the margins for a matplotlib figure?
Reduce left and right margins in...