我正在使用我的翻译应用程序，我的主翻译中遇到了一些问题。 例如，像我下面的代码，我试图改变＆＃34; bed＆＃34;进入＆＃34;坏＆＃34;如果最后一个字符是＆＃34; m＆＃34;它将转变为＆＃34; t＆＃34;。
当我的输入是＆＃34; BEDROOM＆＃34;我想把它变成＆＃34; BADROOT＆＃34;下面的代码只是读了我的第一个声明，另一个变成了假。
private void MachinetranslatorO(){
String change= input.getText().toString();
if (change.substring(0,3).equals("bed")){
String change1 = change.replaceFirst("bed", "bad");
result.setText(change1);
if (change.substring(change.length()-1).equals("m")){
char replaceWith='t';
StringBuffer aBuffer = new StringBuffer(change);
aBuffer.setCharAt(change.length()-1, replaceWith);
result.setText(aBuffer)
答案 0 :(得分：0)
您的第一个声明正常但在此之后您将新的reult分配给change1而不是更改。因此，在您的第二个if语句中，您应该使用较新的字符串 - change1。不要在第二个if语句中使用旧的字符串更改。
在第二个if语句中用change1替换更改。
**编辑 - **
private void MachinetranslatorO(){
String change= input.getText().toString();
String change1;
if (change.substring(0,3).equals("bed")){
change1 = change.replaceFirst("bed", "bad");
result.setText(change1);
if (change1.substring(change1.length()-1).equals("m")){
char replaceWith='t';
StringBuffer aBuffer = new StringBuffer(change1);
aBuffer.setCharAt(change1.length()-1, replaceWith);
result.setText(aBuffer)
答案 1 :(得分：0)
嗯...因为你问我会提供一个快速的小型Java控制台可运行。代码评论很好，所以你应该没有麻烦跟着它。
此应用程序需要一个包含翻译数据的文本文件（在本例中为英语到西班牙语），我还提供了本文末尾的样本数据。
运行应用程序并输入翻译表数据文件（spanish.txt）中包含的任何一个英语单词，程序将显示西班牙语等效文件。
使用您喜欢的IDE创建一个名为 LanguageTranslator 的新项目，然后复制/粘贴以下代码：
package languagetranslator;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.Scanner;
import javax.swing.JOptionPane;
public class LanguageTranslator {
// Declare and intitialize some Class global variables...
// The language. It is also the name of our translation table
// text file (ie: spanish.txt)
private static String language = "spanish";
// The 2 Dimensional Array which will hold our translation table.
private static String[][] translationTable = {};
// Class main() method
public static void main(String[] args) {
// Load up the translationTable[][] 2D String Array from our
// Tanslation Table text file (spanish.txt).
readInTranslationFile(language + ".txt");
// Declare and initialize our String variable we will use to accept
// console input from User with...
String userInput = "lets go";
// Open a Connection to console Using the Scanner Class
try (Scanner conInput = new Scanner(System.in)) {
// Start a while/loop to continually ask the User to
// supply a English word...
while (!userInput.equals("")) {
// Ask User to supply a Word...
System.out.println("\nPlease supply a English word to translate\n"
+ "or supply nothing to exit:");
// Hold what User enters into console within the userInput variable.
userInput = conInput.nextLine();
// If the User supplied nothing then he/she want to quit.
if (userInput.equals("")) { break; }
// Declare and initialize a boolean variable so as to later determine if
// a translation for the supplied word had been found.
boolean found = false;
// Iterate through the translationTable[][] 2D String Array to see if
// the User's supplied word is contained within. The English word to
// match would be in the first column of the array and the translation
// for that word would be in the second column of the array.
for (int i = 0; i < translationTable.length; i++) {
// convert the word supplied by User and the current word being read
// within column 1 of the 2D Array to lowercase so that letter case
// is not a factor here.
if(userInput.toLowerCase().equals(translationTable[i][0].toLowerCase())) {
// If the word supplied by User is found within the translationTable[][]
// array then set the found variable to true and display the spanish
// translation to console.
found = true;
System.out.println("--------------------------------------");
System.out.println("The " + language + " translation is: \u001B[34m"
+ translationTable[i][1] + "\u001B[39;49m");
System.out.println("--------------------------------------");
}
}
// If we've iterated through the entire tanslationTable array and an a match
// was not found then display as such to the User...
if (!found) {
System.out.println("\n\u001B[31mThe supplied word could not be located within "
+ "the Translation Table.\n\u001B[39;49m");
}
// Continue the while/loop and ask User to supply another word
// until the User supplies nothing.
}
}
// Exit the application if nothing is supplied by User.
System.exit(0);
}
// Method used to fill the tanslationTable[][] 2D String Array from
// a text file which contains all the translation data.
private static void readInTranslationFile(String filePath) {
String line = "";
int cnt = 0;
try (BufferedReader br = new BufferedReader(new FileReader(filePath))) {
// Read in each line of the tanslation Table text file so as to place each
//line of data into the translationTable[][] 2 String Array...
while((line = br.readLine()) != null){
// Skip past blank lines in the text file and only process file lines
// which actually contain data.
if (!line.equals("")) {
// Each line of data within the Translation table text file consists
// of a |English word and it's Spanish equivalent delimited with a
// Pipe (|) character. A pipe character is used because you may later
// want to add definitions to your data that may contain different types
// of punctuation.
String[] tok = line.split("\\|");
// The redimPreserve() method allows for appending to a raw 2D String
// Array on the fly.
translationTable = redimPreserve(translationTable, cnt + 1, 2);
// Add the file data line to the 2D String Array...
translationTable[cnt][0] = tok[0].trim();
translationTable[cnt][1] = tok[1].trim();
cnt++; // counter used for incrementing the 2D Array as items are added.
}
}
// Close the BufferReader
br.close();
}
// Trap IO Exceptions from the Bufferreader if any...
catch (IOException ex) {
System.out.println("\n\u001B[31mThe supplied Translation Table file could"
+ " not be found!\n\u001B[39;49m" + filePath);
}
}
// The redimPreserve() method allows for appending to a raw 2D String
// Array on the fly. I created this method to make the task esier to
// accomplish.
private static String[][] redimPreserve(String[][] yourArray, int newRowSize, int... newColSize) {
int newCol = 0;
if (newColSize.length != 0) { newCol = newColSize[0]; }
// The first row of your supplied 2D array will always establish
// the number of columns that will be contained within the entire
// scope of the array. Any column value passed to this method
// after the first row has been established is simply ignored.
if (newRowSize > 1 && yourArray.length != 0) { newCol = yourArray[0].length; }
if (newCol == 0 && newRowSize <= 1) {
JOptionPane.showMessageDialog (null,"RedimPreserve() Error\n\n"
+ "No Column dimension provided for 2D Array!",
"RedimPreserve() Error",JOptionPane.ERROR_MESSAGE);
return null;
}
if (newCol > 0 && newRowSize < 1 && yourArray.length != 0) {
JOptionPane.showMessageDialog (null,"RedimPreserve() Error\n\n"
+ "No Row dimension provided for 2D Array!",
"RedimPreserve() Error",JOptionPane.ERROR_MESSAGE);
return null;
}
String[][] tmp = new String[newRowSize][newCol];
if (yourArray.length != 0) {
tmp = Array2DCopy(yourArray, tmp);
}
return tmp;
}
// Used within the redimPreserve() method to copy 2D Arrays.
private static String[][] Array2DCopy(String[][] yourArray, String[][] targetArray) {
for(int i = 0; i < yourArray.length; i++) {
System.arraycopy(yourArray[i], 0, targetArray[i], 0, yourArray[i].length);
}
return targetArray;
}
}
对于示例翻译表文本文件，您可以将以下行复制/粘贴到文本编辑器中，并将文件另存为＆＃34; spanish.txt＆＃34;在项目的 Classpath （LanguageTranslator）中：
0|el cero
1|un
2|dos
3|tres
4|cuatro
5|cinco
6|seis
7|siete
8|ocho
9|nueve
a|un
able|poder
also|además
always|siempre
anyway|de todas formas
anyways|de todos modos
an|un
and|y
any|alguna
anybody|nadie
anything|cualquier cosa
apple|manzana
banana|platano
be|ser
because|porque
bedroom|cuarto
best|mejor
can|poder
can't|hipocresia
date|fecha
easy|facil
hard|difícil
harder|mas fuerte
now|ahora
never|nunca
new|nuevo
goodbye|adiós
hello|hola
her|su
high|alto
him|el
his|su
home|casa
how|como
in|en
inside|dentro
is|es
isn't|no es
it|eso
it's|sus
its|sus
leave|salir
list|lista
low|bajo
love|amor
of|de
out|fuera
outside|fuera de
over|encima
that|ese
the|la
then|entonces
these|estas
this|esta
those|aquellos
top|parte superior
topped|rematada
time|hora
to|a
was|estaba
weather|clima
what|que
where|donde
whether|si
who|quien
why|por que
you|tu
your|tu
如果您愿意，可以根据需要添加数据。 希望这会有所帮助...