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install.packages("ggplot2")
install.packages("ggmap")
library(ggplot2)
library(ggmap)
library(mapproj)
library(maps)
map<-get_map(location = c(lon = 120.65000, lat = 24.200000),
  zoom = 11, language = "zh-TW", maptype='toner-lite')
ggmap(map)+
geom_point(aes(x= 120.639992,y= 24.154124), color=" red ",size=2) 
 

Main.java:1: error: class, interface, or enum expected
install.packages("ggplot2")
^
Main.java:8: error: unclosed character literal
  zoom = 11, language = "zh-TW", maptype='toner-lite')
                                         ^
Main.java:8: error: unclosed character literal
  zoom = 11, language = "zh-TW", maptype='toner-lite')
                                                    ^
3 errors

Standard output is empty