Java Basic(16)-Many Methods and Instances

In tuna.java:

public class tuna {

private String girlName; → private的意思是它不能在任何class使用

public void setName(String name){

girlName=name;

}

public String getName(){

return girlName;

}

public void saying(){

System.out.printf("Your first gf was %s", getName()); → %s=string getName

}

}

In apples.java:

import java.util.Scanner;

class apples{

public static void main(String args[]){

Scanner input = new Scanner(System.in);

tuna tunaObject = new tuna ();

System.out.println("Enter your first gf's name here: ");

String temp = input.nextLine(); → 它存儲在變量名為Temp

tunaObject.setName(temp); → temp 用於在tuna.java的setName方法

tunaObject.saying(); → 用於在tuna.java的saying方法

}

}

運行這個程序，你會看到：

Enter your first gf's name here:

Kate

Your first gf was Kate