JComboBox comboBox=new JComboBox(); is showing tex strike through on "new JComboBox()"

I was trying to -read and log serial port data using JAVA, but while adding JComboBox, the "new JComboBox" is getting strike through and showing error as- "java: cannot infer type arguments for javax.swing.JComboBox<>".

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Read from a Serial port, notifying when data arrives : COM Port