resource is out of sync with the file system in eclipse

Try the below solution when you get resource is out of sync error. 

Window -->Preferences-->General-->Workspace

Right side you able to see check box[Refresh using native hooks or polling].

Please refer below image. 

 

Anonymous block complete

Some times you will get this error, when you tried to run stored procedure.

There is a two way you can solve this.

1. You must add and run SET SERVEROUTPUT ON before your procedure code. All latest version need this.

2.Click -->View-->Dbms Output and then click  + symbol, while you clicking on this + symbol, it will ask DB connect may be. Select DB environment.Now Run , you can see output in Dbms output window.

Cannot complete the install because one or more required items could not be found. Software being installed: m2e - slf4j over logback logging (Optional) 1.4.0.20130601-0317

 Help-->Install New Software

Installing Maven

After adding the below URL, that child details will be populated, then click Next and continue further.

If you are unable to install maven with below URL in eclipse.

Url: http://www.fuin.org/p2-repository/

Try the below one, Its worked for me.

http://download.jboss.org/jbosstools/updates/m2eclipse-wtp/

How to remove first two columns in notepad++

Its very easy to remove some unwanted characters through Notepad++.

Just paste the content into notepad++ and use ALT+SHIFT+[Select Area( or Navigation Key)] , then just press delete.

Refer the below image.

Implicit super constructor Object() is undefined for default constructor

Suppose if your JRE is not defined properly, you might get this error. 

Just follow the below steps to solve this error. 

In Eclipse:

1.Right click on your project (Package Explorer mode)  and select Build Path -> Configure Build Path

2.Go to Libraries tab 

3.Click Add Library.

4.Select JRE System Library 

5.Click Next

6.Select your JRE

7.Click Finish.

Once finish, make a clean and build. 

Avoid null with valueOf() method

In java the valueOf() and toString() would play the most role for displaying object output. However we should know, which is the best one to use?

We can avoid null, if we will use valueOf() method instead of toString() method.

See the below example for more understanding,

JavaHit javaObject = null;

// will not throw Null Poniter Exception
System.out.println(String.valueOf(javaObject));


// will throw Null Poniter Exception
System.out.println(javaObject.toString())