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sed edit file in place
...w file and then renames it behind the scenes, anyway.
Example:
sed -i 's/STRING_TO_REPLACE/STRING_TO_REPLACE_IT/g' filename
and
sed -i '' 's/STRING_TO_REPLACE/STRING_TO_REPLACE_IT/g' filename
on macOS.
share
...
Playing .mp3 and .wav in Java?
... Media and MediaPlayer classes which will play mp3 files.
Example code:
String bip = "bip.mp3";
Media hit = new Media(new File(bip).toURI().toString());
MediaPlayer mediaPlayer = new MediaPlayer(hit);
mediaPlayer.play();
You will need the following import statements:
import java.io.File;
impor...
How to calculate “time ago” in Java?
...android you can use this: android.text.format.DateUtils#getRelativeTimeSpanString()
– Somatik
Nov 10 '11 at 9:59
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Questions every good Java/Java EE Developer should be able to answer? [closed]
...using final qualifier for the method parameter.
class Name {
private String name;
public Name (String s) {
this.name = s;
}
public void setName(String s) {
this.name = s;
}
}
private void test (final Name n) {
n.setName("test");
}
...
How to check if string input is a number? [duplicate]
How do I check if a user's string input is a number (e.g. -1 , 0 , 1 , etc.)?
24 Answers
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Constructor in an Interface?
...at calls each of these constructors.
Or in code:
interface Named { Named(String name); }
interface HasList { HasList(List list); }
class A implements Named, HasList {
/** implements Named constructor.
* This constructor should not be used from outside,
* because List parameter is missin...
argparse store false if unspecified
...r.add_argument('--bar', action='store_false') _StoreFalseAction(option_strings=['--bar'], dest='bar', nargs=0, const=False, default=True, type=None, choices=None, help=None, metavar=None) >>> parser.parse_args([]) Namespace(bar=True)
– Leynos
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Convert bytes to a string
...
You need to decode the bytes object to produce a string:
>>> b"abcde"
b'abcde'
# utf-8 is used here because it is a very common encoding, but you
# need to use the encoding your data is actually in.
>>> b"abcde".decode("utf-8")
'abcde'
...
How to get IP address of the device from code?
...ressUtils;
public class Utils {
/**
* Convert byte array to hex string
* @param bytes toConvert
* @return hexValue
*/
public static String bytesToHex(byte[] bytes) {
StringBuilder sbuf = new StringBuilder();
for(int idx=0; idx < bytes.length; idx++) {...
bash string equality [duplicate]
...
There's no difference for string comparisons, but you can't use = for numeric comparisons in (()) (you must use == in (()) or -eq in [], test or [[]]. See my answer here.
– Paused until further notice.
Jul 16 '10...