在Java中，您是否可以將多個對話框壓縮爲一個對話框

Question

是否有將多個對話框變爲一個對話框的方法？

import javax.swing.JOptionPane; 
public class loop { 
public static void main(String args[]) { 

    int input; 
    int sum = 0; 
    int num1 = 0; 
    int counter = 1; 
    String num = ""; 


    input=(Integer.parseInt(JOptionPane.showInputDialog ("Enter an integer"))); 


    if (input == (-input)) { 

     input = input * (-1); 
     num = String.valueOf(input); 
     num1 = num.length(); 
     JOptionPane.showMessageDialog(null,"the digits of " + input + " are: "); 

     for (int i = 0; i < num1; i++) { 
      String var = num.substring(i, counter); 
      int var1 = Character.getNumericValue(var.charAt(0)); 
      JOptionPane.showMessageDialog(null, var + " "); 
      sum = sum + var1; 
      counter++; 
     } 

     JOptionPane.showMessageDialog(null,"the sum is: " + sum); 

    } else { 
     num = String.valueOf(input); 
     num1 = num.length(); 
     JOptionPane.showMessageDialog(null, "the digits of " + input + " are: "); 

     for (int i = 0; i < num1; i++) { 
      String var = num.substring(i, counter); 
      int var1 = Character.getNumericValue(var.charAt(0)); 
      JOptionPane.showMessageDialog(null,var + " "); 
      sum = sum + var1; 
      counter++; 
     } 

     JOptionPane.showMessageDialog(null, "the sum is: " + sum); 
    } 
} 
} 

我必須編寫一個程序，用戶輸入一個整數，程序將輸出分解的數字和總和。有了上面的代碼，我可以運行該程序，但每個分解整數的數字都有自己的對話框，是否可以讓它輸出一個對話框而不是多個？

import javax.swing.JOptionPane; 

public class loop{ 
public static void main(String []args){ 


    { 

    long a,b,test; 
    long counter = 0; 


    a=(Long.parseLong(JOptionPane.showInputDialog ("Enter an integer"))); 
    test = a; 
    while (test > 0) 

    { 
    test = test/10; 
    counter = counter + 1; 
    } 
    counter = counter - 1; 


    while (counter >= 0) 
    { 
    b = a% (long) Math.pow(10, counter); 
    a = a/(long) Math.pow(10,counter); 
    a = b; 
    counter = counter - 1; 

    { 
    String longString=String.valueOf(a); 
    JOptionPane.showMessageDialog(null, a + " "); 
    } 
    } 
    } 
    } 
    } 

我剛入一點與它不同的方式，但現在它凝結一些數字和輸出這是從來沒有進入了一個0。

Answer 1

當然。不要在for循環中調用JOptionPane.showMessageDialog()。 將值分配給循環外的字符串，然後在循環完成後，請調用JOptionPane.showMessageDialog()來傳遞字符串。