原始问题
所以我是编码新手。我可能已经达到了我的 3 个月大关。但我喜欢通过我正在上的课程,因为这些东西真的让我很感兴趣。所以我想弄乱一些代码来尝试更多地理解它。经过大量的谷歌搜索,这是我所得到的。该程序假设要求输入密码。如果输入正确的密码,它将显示两个选项。选项 1 将让您输入信息(姓名、姓氏、年龄、手机号码)。选项 2 将显示存储的信息。除了我想将从 A 获得的信息显示到 B 之外,到目前为止一切都很好。我有两个单独的课程。第一个被称为 main (这是主要的方法,女巫工作正常)
import javax.swing.*;
//Created by: Robert Duval
//3/26/13
public class Main
{
public static void main(String[] args)
{
String tempString, passWord = "mrGiggles", input = "null";
while(!input.equals(passWord)) //This loop looks for the password
{
input = JOptionPane.showInputDialog("Hello, please enter password.");
if(input.equals(passWord)) //If the password is correct
{
while(!input.equals("Enter information")||!input.equals("View profile")) //This loop looks to see what to do next
{
input = JOptionPane.showInputDialog("Welcome\nEnter information\nView profile");
if(input.equals("Enter information"))
{
display.input();
}
else if(input.equals("View profile"))
{
display.stored();
}
else
{
tempString = "ERROR\nCannot find what you are looking for.";
JOptionPane.showMessageDialog(null, tempString);
}
}
}
else //If the password is incorrect.
{
tempString = "In-correct";
JOptionPane.showMessageDialog(null, tempString);
}
}
}
}
我的第二堂课(显示器)是我遇到问题的地方。我应该将它们设为公共字符串吗?或者是什么?input() 方法填充了我想在 stored() 方法中使用的字符串。我一直在寻找这个,但我不明白回报和什么不是。如果你能帮助我并指出我的缺陷,那就太好了。
import javax.swing.*;
//Created by: Robert Duval
//3/26/13
public class display
{
public static void input() //This is the method that will ask for the information
{
String age="null", cellNumber="null", name="null", lastName="mull", allInfo = name+ "\n" +lastName+ "\n" +age+ "\n" +cellNumber+ "\n";
name = JOptionPane.showInputDialog("Enter the first name");
lastName = JOptionPane.showInputDialog("Enter the last name");
age = JOptionPane.showInputDialog("Enter the age");
cellNumber = JOptionPane.showInputDialog("Enter the cell phone number");
display.stored();
}
public static void stored() //This method is asking the user what to show for the input() method.
{
String loop = "loop", tempString;
while(!loop.equals("break"))
{
tempString = JOptionPane.showInputDialog("What information would you like to see? \nname\nage\ncell number\nall info\nquit");
if(tempString.equals("name")||tempString.equals("Name")||tempString.equals("NAME"))
{
JOptionPane.showMessageDialog(null, name); //This is where I want to display the name String from input() method
}
else if(tempString.equals("age")||tempString.equals("Age")||tempString.equals("AGE"))
{
JOptionPane.showMessageDialog(null, age); //This is where I want to display the age String from input() method
}
else if(tempString.equals("cell number")||tempString.equals("Cell number")||tempString.equals("cell Number")||tempString.equals("Cell Number")||tempString.equals("cellNumber")||tempString.equals("cellnumber")||tempString.equals("Cellnumber"))
{
JOptionPane.showMessageDialog(null, cellNumber); //This is where I want to display the cellNumber String from input() method
}
else if(tempString.equals("all info")||tempString.equals("All info")||tempString.equals("all Info")||tempString.equals("All Info")||tempString.equals("allinfo")||tempString.equals("allInfo")||tempString.equals("Allinfo")||tempString.equals("AllInfo"))
{
JOptionPane.showMessageDialog(null, allInfo); //This is where I want to display the allInfo String from input() method
}
else if(tempString.equals("quit")||tempString.equals("Quit")||tempString.equals("QUIT"))
{
loop = "break"; //Breaks the while loop
}
else
{
tempString = "Not a valid answer. \nPlease try again.";
JOptionPane.showMessageDialog(null, tempString);
}
}
}
}
更新的问题
好的,所以在查看答案后,我真的很接近了!但是由于某种原因,当我查看数据时,它会为所有内容生成“null”。我在想它是因为我关闭了该方法,然后重新打开它,所以一切都刷新了。如何保存输入的信息。离开方法。回来但打开显示并显示该信息?
这是更新的代码:
主班
import javax.swing.*;
//Created by Robert Duval
//3/26/13
public class Main
{
public static void main(String[] args)
{
String tempString, passWord = "mrGiggles", input = "null";
display display = new display();
while(!input.equals(passWord)) //This loop looks for the password
{
input = JOptionPane.showInputDialog("Hello, please enter password.");
if(input.equals(passWord)) //If the password is correct
{
while(!input.equalsIgnoreCase("Enter information")||!input.equalsIgnoreCase("View profile")) //This loop looks to see what to do next
{
input = JOptionPane.showInputDialog("Welcome\nEnter information\nView profile");
if(input.equalsIgnoreCase("Enter information"))
{
display.input();
}
else if(input.equalsIgnoreCase("View profile"))
{
display.stored();
}
else
{
tempString = "ERROR\nCannot find what you are looking for.";
JOptionPane.showMessageDialog(null, tempString);
}
}
}
else //If the password is incorrect.
{
tempString = "In-correct";
JOptionPane.showMessageDialog(null, tempString);
}
}
}
}
显示类
import javax.swing.*;
//Created by: Robert Duval
//3/26/13
public class display
{
String age="null", cellNumber="null", name="null", lastName="mull", allInfo = name+ "\n" +lastName+ "\n" +age+ "\n" +cellNumber+ "\n";
public void input()
{
name = JOptionPane.showInputDialog("Enter the first name");
lastName = JOptionPane.showInputDialog("Enter the last name");
age = JOptionPane.showInputDialog("Enter the age");
cellNumber = JOptionPane.showInputDialog("Enter the cell phone number");
}
public void stored()
{
String tempString;
while(true)
{
tempString = JOptionPane.showInputDialog("What information would you like to see? \nname\nage\ncell number\nall info\nquit");
if (tempString.equalsIgnoreCase("name"))
{
JOptionPane.showMessageDialog(null, name); //This is where I want to display the name String from input() method
}
else if(tempString.equalsIgnoreCase("age"))
{
JOptionPane.showMessageDialog(null, age); //This is where I want to display the age String from input() method
}
else if(tempString.equalsIgnoreCase("cell number"))
{
JOptionPane.showMessageDialog(null, cellNumber); //This is where I want to display the cellNumber String from input() method
}
else if(tempString.equalsIgnoreCase("all info")||tempString.equalsIgnoreCase("allinfo"))
{
JOptionPane.showMessageDialog(null, allInfo); //This is where I want to display the allInfo String from input() method
}
else if(tempString.equalsIgnoreCase("quit"))
{
break; //Breaks the while loop
}
else
{
tempString = "Not a valid answer. \nPlease try again.";
JOptionPane.showMessageDialog(null, tempString);
}
}
}
}
顺便说一句,感谢大家的所有帮助。我很感激。
解决方案
好吧,伙计们。我又玩了一些,发现如何让它工作。感谢所有需要的帮助。
主班
import javax.swing.*;
//Created by Robert Duval
//3/26/13
public class Main
{
public static void main(String[] args)
{
String tempString, passWord = "mrGiggles", input = "null";
display display = new display();
while(!input.equals(passWord)) //This loop looks for the password
{
input = JOptionPane.showInputDialog("Hello, please enter password.\nQuit");
if(input.equals(passWord)) //If the password is correct
{
while(!input.equalsIgnoreCase("Enter information")||!input.equalsIgnoreCase("View profile")) //This loop looks to see what to do next
{
input = JOptionPane.showInputDialog("Welcome\nEnter information\nView profile\nLog out");
if(input.equalsIgnoreCase("Enter information"))
{
display.input();
}
else if(input.equalsIgnoreCase("View profile"))
{
display.stored();
}
else if(input.equalsIgnoreCase("log out"))
{
break;
}
else
{
tempString = "ERROR\nCannot find what you are looking for.";
JOptionPane.showMessageDialog(null, tempString);
}
}
}
else if(input.equalsIgnoreCase("quit"))
{
break;
}
else //If the password is incorrect.
{
tempString = "In-correct";
JOptionPane.showMessageDialog(null, tempString);
}
}
}
}
显示类
import javax.swing.*;
//Created by: Robert Duval
//3/26/13
public class display
{
String age="null", cellNumber="null", name="null", lastName="null";
public void input()
{
name = JOptionPane.showInputDialog("Enter the first name");
lastName = JOptionPane.showInputDialog("Enter the last name");
age = JOptionPane.showInputDialog("Enter the age");
cellNumber = JOptionPane.showInputDialog("Enter the cell phone number");
}
public void stored()
{
String tempString, allInfo = name+ "\n" +lastName+ "\n" +age+ "\n" +cellNumber+ "\n";
while(true)
{
tempString = JOptionPane.showInputDialog("What information would you like to see? \nName\nAge\nCell number\nAll info\nBack");
if (tempString.equalsIgnoreCase("name"))
{
JOptionPane.showMessageDialog(null, name);
}
else if(tempString.equalsIgnoreCase("age"))
{
JOptionPane.showMessageDialog(null, age);
}
else if(tempString.equalsIgnoreCase("cell number"))
{
JOptionPane.showMessageDialog(null, cellNumber);
}
else if(tempString.equalsIgnoreCase("all info")||tempString.equalsIgnoreCase("allinfo"))
{
JOptionPane.showMessageDialog(null, allInfo);
}
else if(tempString.equalsIgnoreCase("back"))
{
break;
}
else
{
tempString = "Not a valid answer. \nPlease try again.";
JOptionPane.showMessageDialog(null, tempString);
}
}
}
}
它运行完美!
PS它不会让我回答我自己的问题