Java naming convention for boolean variable names: writerEnabled vs writerIsEnabled

Which of the following declarations conforms to Java's naming conventions?

private boolean writerIsEnabled;
// with methods like
public boolean getWriterIsEnabled() 
public void setWriterIsEnabled()

OR

private boolean writerEnabled;
// with methods like
public boolean getWriterEnabled() 
public void setWriterEnabled()

I personally find the first name "writerIsEnabled" to be more readable, especially when you use it in an if statement like this -

if(writerIsEnabled)
 {
    //...
 }