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好吧，我有一個我正在爲課程做的程序。我必須將輸入形式放入文本字段中，然後將其投入重載構造函數，該構造函數將字符串作爲參數。還有一些與構造函數有關的其他事情，所以在我的代碼中，您會看到一些超出此問題的內容。此外，我不會發布我的方法，因爲它是作業的重要組成部分，並且這些工作都很好，（在我嘗試將信息傳遞給構造函數之前）。我想知道的是，我有一種方法可以將文本字段信息傳遞到構造函數中，因爲我現在已經在這裏工作了幾個小時，但顯然我不明白這一點。如果你只是想引導我到某個地方，我可以學習如何做到這一點，我將不勝感激。將文本字段值傳遞給構造函數
代碼：
package lab4;
import java.awt.*;
import java.awt.List;
import javax.swing.*;
import java.awt.event.*;
import java.lang.Iterable.*;
import java.util.*;
public class Lab4 extends JFrame{
private JTextField jTextField1;
private JButton doSome;
private JLabel ansTxt;
private JLabel asciSum;
private JLabel jLabel1;
private JLabel jLabel3;
private JLabel jLabel4;
private JLabel jLabel5;
private JLabel jLabel6;
private JLabel lowCnt;
private JLabel numDigit;
private JLabel upCnt;
private JLabel vowelCnt;
private String userInput = jTextField1.getText();
public Lab4()
{
initComponents();
}
public Lab4(String x)
{
this.userInput = x;
}
public Lab4(char[] x)
{
}
public Lab4(byte[] x)
{
}
private void initComponents() {
jTextField1 = new JTextField();
jLabel1 = new JLabel();
doSome = new JButton();
ansTxt = new JLabel();
jLabel3 = new JLabel();
jLabel4 = new JLabel();
jLabel5 = new JLabel();
jLabel6 = new JLabel();
asciSum = new JLabel();
vowelCnt = new JLabel();
numDigit = new JLabel();
upCnt = new JLabel();
lowCnt = new JLabel();
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
setAutoRequestFocus(false);
setFont(new java.awt.Font("Comic Sans MS", 1, 12)); // NOI18N
jLabel1.setText("Enter a string Here and I'll show you some info about it!");
doSome.setToolTipText("This Will Do Something");
doSome.setInheritsPopupMenu(true);
doSome.setLabel("Click Me When Your Done!");
doSome.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
doSomeActionPerformed(evt);
}
});
ansTxt.setText("ASCII SUM:");
jLabel3.setText("Number of Vowels:");
jLabel4.setText("Number of Digits:");
jLabel5.setText("Number Of Uppercase:");
jLabel6.setText("Number Of Lowercase:");
GroupLayout layout = new GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING, false)
.addComponent(ansTxt)
.addComponent(jLabel5, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jLabel4, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jLabel3, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jLabel6, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGap(84, 84, 84)
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addComponent(lowCnt)
.addComponent(vowelCnt)
.addComponent(asciSum)
.addComponent(numDigit)
.addComponent(upCnt)))
.addGroup(layout.createSequentialGroup()
.addGap(95, 95, 95)
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING, false)
.addComponent(jTextField1)
.addComponent(jLabel1, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(doSome, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))))
.addContainerGap(239, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(34, 34, 34)
.addComponent(jLabel1)
.addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jTextField1, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(doSome)
.addGap(34, 34, 34)
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
.addComponent(ansTxt)
.addComponent(asciSum))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3)
.addComponent(vowelCnt))
.addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
.addComponent(jLabel4)
.addComponent(numDigit))
.addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
.addComponent(jLabel5)
.addComponent(upCnt))
.addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
.addComponent(jLabel6)
.addComponent(lowCnt))
.addContainerGap(157, Short.MAX_VALUE))
);
pack();
}
private void doSomeActionPerformed(ActionEvent evt)
{
String takeTfIn = this.jTextField1.getText();
this.asciSum.setText(getAsciiSum(takeTfIn));
this.vowelCnt.setText(getNumVowels(takeTfIn));
this.numDigit.setText(getNumDigits(takeTfIn));
this.upCnt.setText(getNumUpperCase(takeTfIn));
this.lowCnt.setText(getNumLowerCase(takeTfIn));
}
// Excluded methods go here...
public static void main(String[] args)
{
Lab4 test = new Lab4();
test.setVisible(true);
}
}
我不太明白的問題;你想要將文本字段的內容傳遞到創建並顯示文本字段的類中，從中可以獲得要創建和顯示文本字段的文本字段...以及。 –
不完全確定問題是什麼......如果您想要使用聲明爲「public Lab4（String x）'的構造函數，則使用新的Lab4（」text「）或」new Lab4（some-other-string表達）'會做到這一點。你可能還想確保_all_你的構造函數調用'initComponents（）'，否則它不會自動發生。 – ajb
我必須將用戶輸入形式傳遞給具有字符串的構造函數，然後可以將其用於輸入所有我的方法。我們必須這樣做，因爲我假設在某個時刻，教師會讓我們使用其他構造函數來傳入非字符串數據，然後將其轉換爲字符串，通過字符串構造函數傳遞，然後轉移到方法上， （它簡單地加上ascii字符，掃描元音，大寫和小寫字母，等等。） –