Java Basic Knowledge Hardening Collection Framework note 13:collection Collection store student objects and traverse

1. Collection Collection stores student objects and iterates through:

Requirements: Store custom objects and traverse student (Name,age)

Analysis:
(1) Create student class
(2) Creating a Collection Object
(3) Create student objects
(4) Adding student objects to the collection object
(5) Traversing the collection

2. code example:

Student.java, as follows:

1  Packagecn.itcast_04;2 3  Public classStudent {4     PrivateString name;5     Private intAge ;6 7      PublicStudent () {8         Super();9     }Ten  One      PublicStudent (String name,intAge ) { A         Super(); -          This. Name =name; -          This. Age =Age ; the     } -  -      PublicString GetName () { -         returnname; +     } -  +      Public voidsetName (String name) { A          This. Name =name; at     } -  -      Public intGetage () { -         returnAge ; -     } -  in      Public voidSetage (intAge ) { -          This. Age =Age ; to     } +  -}

Write a test class CollectionTest2 again, as follows:

1  Packagecn.itcast_04;2 3 Importjava.util.ArrayList;4 Importjava.util.Collection;5 ImportJava.util.Iterator;6 7 /*8 * Requirements: Store custom objects and traverse student (Name,age)9  *Ten * Analysis: One * A: Create student class A * B: Create a Collection Object - * C: Create student Objects - * D: Add student objects to the collection object the * E: Traversing the collection -  */ -  Public classCollectionTest2 { -      Public Static voidMain (string[] args) { +         //To create a collection object -Collection C =NewArrayList (); +  A         //Create student Objects atStudent S1 =NewStudent ("Marten Cicada", 25); -Student s2 =NewStudent ("Little Joe", 16); -Student s3 =NewStudent ("huangyueying", 20); -Student S4 =NewStudent (); -S4.setname ("Big Joe"); -S4.setage (26); in  -         //add a Student object to the collection object to C.add (S1); + c.add (S2); - C.add (S3); the C.add (S4); *C.add (NewStudent ("Sun Shangxiang", 18));//Anonymous Objects $ Panax Notoginseng         //iterating through the collection -Iterator it =c.iterator (); the          while(It.hasnext ()) { +Student s =(Student) It.next (); ASystem.out.println (S.getname () + "---" +s.getage ()); the         } +     } -}

The results are as follows:

Java basic Knowledge Hardening Collection Framework note 13:collection Collection store student objects and traverse