class Check_data_type{

public static void main(String args[]) {

int intData = 15;

float floatData = 20.5f;

char charData = 'X';

Integer integerData = 25;

Double doubleData = 35.5;

String str = "Hello";

// show datatypes of variables by using getClass() and getSimpleName() methods

System.out.println(intData + " is of type " + ((Object)intData).getClass().getSimpleName());

System.out.println(floatData + " is of type " + ((Object)floatData).getClass().getSimpleName());

System.out.println(charData + " is of type " + ((Object)charData).getClass().getSimpleName());

System.out.println(integerData + " is of type " + integerData.getClass().getSimpleName());

System.out.println(doubleData + " is of type " + doubleData.getClass().getSimpleName());

System.out.println(str + " is of type " + str.getClass().getSimpleName());

}

}