#include <LiquidCrystal_I2C.h>

int lcdColumns = 16;
int lcdRows = 2;

LiquidCrystal_I2C lcd(0x27, lcdColumns, lcdRows);  

void setup()
{
  lcd.init();
  lcd.backlight();
}

void loop()
{
  lcd.setCursor(0, 0);
  lcd.print("Hello, World!");
  delay(1000);
  lcd.clear();
  lcd.setCursor(0,1);
  lcd.print("Venkateswarlu");
  delay(1000);
  lcd.clear(); 
}