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java calculate method run time

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long startTime = System . currentTimeMillis (); doReallyLongThing (); // call your method here long endTime = System . currentTimeMi...

SQL basics- complete reference guide - part8 SQL System Commands

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Part8: SQL System Commands Reference guide TOPIC TEXT SYNTAX Example ARRAY_GET Returns one element of an array. ARRAY_GET(arrayExpres...

SQL basics- complete reference guide - part7 - Date Time Functions

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Part7: SQL Date Time Functions Reference TOPIC TEXT SYNTAX Example CURRENT_DATE Returns the current date. { CURRENT_DATE [ () ] | CUR...

Java Capture/save image from swing Component eg : JFrame JPanel ..

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Capture image from any swing Component and save to file. Capture  : BufferedImage image = new BufferedImage(component.getWidth(), ...

SQL basics- complete reference guide - part6 - String functions

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Part6: SQL String Functions Complete Reference TOPIC TEXT SYNTAX Example ASCII Returns the ASCII value of the first character in the ...

java pad string left right - String.format() method

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String.format() can be used to left/right pad a given string. public static String padRight ( String s , int n ) {       return ...

Top Java Interview Question : reverse a string using recursion

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Best Answer using Recursion : public String reverse(String str) { if ((null == str) || (str.length() <= 1)) { return st...

SQL basics- complete reference guide - part5 - Mathematical Functions

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Part5: Mathematical Functions in SQL- Complete Reference Function Description SYNTAX Example ABS ABS ( { int | long | decimal | doubl...

SQL basics- complete reference guide - part4 - Aggregate Functions in SQL

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Part4: Aggregate Functions in SQL- complete reference sheet Command/Function Description SYNTAX Example AVG The average (mean) value....

Call one constructor from another in Java

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Is this possible to call one constructor from another in Java ? Yes, it is possible: public class Foo { private int x; public F...