Question

I want to take backup of database. I am using mysql databse and wamp server.For that i have written the following code.

Process runtimeProcess =Runtime.getRuntime().exec("C:\\wamp\\bin\\mysql\\mysql5.5.20\\bin\\mysqldump.exe -u root -pkarma dailyreport -r  "+assign+"\\dailyreport.sql");  
int processComplete = runtimeProcess.waitFor();  
if(processComplete == 0)
{  
JOptionPane.showMessageDialog(null, "Backup has been taken successfully", "BackUp", JOptionPane.INFORMATION_MESSAGE);
} 
else 
{  
JOptionPane.showMessageDialog(null, "Could not take backup", "BackUp", JOptionPane.INFORMATION_MESSAGE); 
}

In above code String assign denotes the the path where i want to save the backup of database. But problem is that i am taking the location to save backup at runtime.and if I select path where folder name contains space it could not take backup because System does not getting the path as it contains space.Please help me how should i change the runtime.getruntime.exec() command.

Answer 1

Enclose the path in double quotes. That would help the shell see the entire argument as a single one instead of multiple arguments due to presence of space.

Process runtimeProcess = 
    Runtime.getRuntime().exec("C:\\wamp\\bin\\mysql\\mysql5.5.20\\bin\\mysqldump.exe "
        + "-u root -pkarma dailyreport -r  \"" 
        + assign + "\\dailyreport.sql\" ");