I need some help with this. I just installed the last java JDK and this is the result I get. Does anyone have any suggestions?

class apples{
public static void main(string args[ ]){
system.out.println("Hello World");
}

}

youtube.java:2: error: cannot find symbol
public static void main(string args[]){

youtube.java:3: error: packagesystem does not exist
system.out.println("Hello World");