account.changePassword(oldPassword, newPassword);Date lastModified = getLastModified();lastModified.setTime(System.currentTimeMillis()); The above code updates the last modified date of the password and wants to avoid creating a new Object, but uses instead the setTime method
Using one class or interface that contains all kinds of constants used during the application may not be the best solution. These constants are unrelated with each other, the only
We have been using logging in Java and different code requires different levels of logging. Hence these Levels will come in handy. Code sample: import java.util.logging.Logger;import java.util.logging.Level;public class JavaLogger{ public
At times, you may want to make your application sleep for a determined period pending some other action. This is very easily achieved in Java with threads. Code sample: import
Do not assume char represents only one character: “uD83DuDC31”.length() == 2 The escape sequence represents the Unicode code point 0x1F431 in UTF-16 as 2 chars. So even though this is
JSON is being widely adapted by the industry for easier transformation of data. Using the json-simple-1.1.1.jar in the classpath will provide you with the basics of JSON and its functionality.
RandomAccessFile raf = new RandomAccessFile(f, ???r???);for (???) { raf.seek(pos); byte b = raf.readByte();} Despite its name, the java.io.RandomAccessFile class is not very convenient for accessing files in a random-access manner,
Cloning is the easiest way of copying a class. With this, however, you also have all properties being passed on to the cloned class, which probably is a security hassle.
Collection.removeIf is a very powerful method that acts on a condition. In the code sample below, there is a list which has few elements in it and the condition is
