Java DOM xml write "\n\t"

how can i add "\n\t" between elements. I want look like this:

<data no="1">
    <realColor>255 254 253</realColor>
    <sensorFreq>1 2 3</sensorFreq>
</data>

but it is look like this:

<data no="1">
    <realColor>255 254 253</realColor>
<sensorFreq>1 2 3</sensorFreq>  // I cant add '\t'
</data>