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Not able to execute the method based on OS in JAVA

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# 1  
Old 06-18-2009
Not able to execute the method based on OS in JAVA
Hi,

In my application,I want to find out the OS name and based on OS I want to do some specific operations.So I write some code based on it in JAVA but I am able to get the OS name but Not able to use the method specific to OS.I write a simple code to check it and found that it is not going to the if statement.code is as follow--

Quote:

public class OSnane {

public static void main(String[] args) {

String OsName=null;
OsName=System.getProperty("os.name");

System.out.println("OS name="+OsName);
if(OsName == "SunOS")
System.out.println("hello Sun");
else if(OsName == "Windows XP")
System.out.println("Hello Windows");
else if(OsName == "Linux")
System.out.println("Hello Linux");
else
System.out.println("No OS selected!!!");


}

}
and the Output is:

Quote:
OS name=SunOS
No OS selected!!!

So please tell me how can I Use methods based on OS.
Thanks in Advance ...
# 2  
Old 06-18-2009
Please consider taking some time for some readings to consolidate your Java knowledge. You don't use equality (==) for string equality tests. You must use the String.equals() method.

e.g. osName.equals("SunOS")

By using == you were comparing two object references and expectedly the equality is false.
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