Big Data Java Foundation day job

Tag:java   list    collection    

import java.util.list;import java.util.arraylist;class listdemo{          @SuppressWarnings (value= "unchecked")     public static void  main (String[] args) {        list list = new  arraylist ();         list.add (;     )    list.add (New integer);         list.add (" One ")         list.add (New string (" one ");         list.add (New student ("One", ' M ',));         list.add (New student ("A", "F",));             student student = new student ();         student.setname ("threE ");         student.setsex (' F ');         student.setage (+);         list.add (student);                 list list_repeat  = new arraylist ();         list_repeat.add (; )        list_repeat.add (student);         boolean bool_list = list.containsall (list_repeat);//contains List_repeat collection          boolean bool_obj = list.contains (student);//contains Student objects          list.remove (0);//move out of the set No. 0 element          list.remove (student);//move out the elements of the student object in the collection         list.removeall ( list);//Empty set &NBSP;&NBSP;&NBSp;             system.out.println (Bool_list) ;         system.out.println (Bool_obj);         system.out.println (List.size ());         System.out.println ("----------");                 student s = null;        for ( Int i=0;i<list.size (); i++) {            if ( List.get (i)  instanceof student) {                 s =  (Student) list.get (i);                 system.out.println ("Name:"  + s.getname ()   +  ", Sex:"  + s.getsex ()  +  ", Age:"  + s.getage ());             }else{                 system.out.println (List.get (i));             }        }    }}class student{     private String name;    private char sex;     private int age;    public student () {    }     public student (string name,char sex,int age) {         super ();        this.name =  name;        this.sex = sex;         this.age = age;    }    public void setname (String name) {         this.name = name;    }     public string getname () {        return  this.name;    }    public void setsex (char sex) {         this.sex = sex;    }         public char getsex () {         return this.sex;    }    public void setage (int  age) {        this.age = age;    }         public int getage () {         return this.age;    }} 

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Big Data Java Foundation day job