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前幾天我在這裏發佈了一個關於這個文件的帖子，它有一些很好的答案/想法，我還沒有實現，因爲我一直在工作，喝酒，沒有有時間去解決它（哈哈）。無論如何，我重新發帖的原因是因爲我有點討厭這個問題。我遇到的問題是我的while（_active）循環，我用這個包裝了我的Main類和我的commandCreate類，只需將布爾值更改爲false即可輕鬆退出文件。但是，在我的commandCreate類中，布爾值設置爲false，雖然它是假的，但我不能進入創建部分，因爲它不允許我，它只是繼續返回到Main，其中 - 就像我將布爾值更改爲true，它會自動將我直接帶到Create部分，完全跳過Main類，即使我啓動到Main類中。如果有人能夠幫助我，我的Main和commandCreate類都在下面。布爾故障（以我的名義）
不建議對我來說，我commandCreate改變的方法，以及改變周圍的，現在什麼，我只想得到這個固定
Main.java
import java.io.*;
import java.util.*;
public class Main extends API {
private boolean _active = true;
String _username = System.getProperty("user.name").toLowerCase();
String _os = System.getProperty("os.name").trim().toLowerCase();
CommandCreate create = new CommandCreate();
public Main() {
try {
while(_active) {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
print(username() + "@" + os() + ":~$ ");
String command = br.readLine();
if(command.equalsIgnoreCase("create")) {
new CommandCreate();
/*} else if(command.equals("compile")) {
new CommandCompile();*/
} else if(command.equalsIgnoreCase("help")) {
println("Commands");
println(" create - Creates .java files, does not compile.");
//println(" compile - Creates .java files, compiles on creation.");
println(" exit - Exits program");
println(" help - Shows help documentation.");
} else if(command.equalsIgnoreCase("exit")) {
/*print("Are you sure you want to exit? (Y/N) ");
String exit = br.readLine();
if(exit.equalsIgnoreCase("y")) {
exit();*/
_active = false;
/*} else {
println("Cancelled!");
}*/
} else if(command.isEmpty()) {
} else {
println("\"" + command + "\" does not exist. Please review the \"help\" menu");
}
}
} catch(IOException ex) {
ex.printStackTrace();
}
}
public static void main(String[] args) {
new Main();
}
}
commandCreate.java
import java.util.*;
import java.io.*;
public class commandCreate {
boolean _active = true;
String _username = System.getProperty("user.name").toLowerCase();
String _os = System.getProperty("os.name").trim().toLowerCase();
String fileName, create, option;
public commandCreate() {
try {
while(_active) {
System.out.print(_username + "@" + _os + ":~/create$ ");
Scanner kbd = new Scanner(System.in);
String userLine = kbd.nextLine();
if(java.util.regex.Pattern.matches(".*\\S\\s+\\S.*", userLine)) {
Scanner read = new Scanner(userLine);
option = read.next();
fileName = read.next();
}
FileWriter create = new FileWriter(new File("Created Files/" + fileName + ".java"));
if(userLine.equals(option + " " + fileName)) {
if(option.equals("-a")) {
// Option = -a, creates standard file with main class.
create.write("public class " + fileName + " {\n");
create.write(" public static void main(String[] args) {\n");
create.write(" System.out.println(\"Welcome to your new program!\");\n");
create.write(" }\n");
create.write("}");
} else if(option.equals("-c")) {
// Option = -c , creates standard file with overloaded constructor & main class.
create.write("public class " + fileName + " {\n");
create.write(" public " + fileName + "() {\n");
create.write(" System.out.println(\"Welcome to your new program!\");\n");
create.write(" }\n");
create.write("\n");
create.write(" public static void main(String[] args) {\n");
create.write(" new " + fileName + "();\n");
create.write(" }\n");
create.write("}");
} else if(option.equals("-j")) {
// Option = -j, creates GUI within constructor w/ single JLabel.
create.write("import javax.swing.*;\n");
create.write("import java.awt.*;\n");
create.write("import java.awt.event.*;\n");
create.write("\n");
create.write("public class " + fileName + " extends JFrame {\n");
create.write(" private static final int HEIGHT = 50;\n");
create.write(" private static final int WIDTH = 400;\n");
create.write("\n");
create.write(" private JLabel welcomeJ;\n");
create.write("\n");
create.write(" public " + fileName + "() {\n");
create.write(" super(\"Welcome to your program - " + fileName + "\");\n");
create.write(" Container pane = getContentPane();\n");
create.write(" setLayout(new FlowLayout());\n");
create.write("\n");
create.write(" welcomeJ = new JLabel(\"Welcome To Your Program!\", SwingConstants.CENTER);\n");
create.write("\n");
create.write(" pane.add(welcomeJ);\n");
create.write("\n");
create.write(" setSize(WIDTH, HEIGHT);\n");
create.write(" setVisible(true);\n");
create.write(" setResizable(false);\n");
create.write(" setDefaultCloseOperation(EXIT_ON_CLOSE);\n");
create.write(" }\n");
create.write("\n");
create.write(" public static void main(String[] args) {\n");
create.write(" new " + fileName + "();\n");
create.write(" }\n");
create.write("}");
}
} else if(userLine.equalsIgnoreCase("help")) {
System.out.println("Commands");
System.out.println(" Syntax: [-option] [filename]");
System.out.println(" -a [filename] [Program: main class]");
System.out.println(" -c [filename] [Program: overloaded constructor, main class]");
System.out.println(" -j [filename] [Program: GUI: overloaded constructor, main class]");
} else if(userLine.equalsIgnoreCase("exit")) {
System.exit(0);
} else {
System.out.println("Error in syntax. Please review the \"help\" menu");
}
create.close();
}
} catch(IOException e) {
System.out.println("There was an error: " + e);
} catch(InputMismatchException ex) {
System.out.println("There was an error: " + ex);
}
}
public static void main(String[] args) {
new commandCreate();
}
}
偏題：爲什麼你在變量前加下劃線？不是公約的一部分。 – LuckyLuke 2012-03-14 08:25:06
你能鏈接到你以前的問題嗎？ – 2012-03-14 08:29:17
while（true）替換while循環（_active），當你想終止你的程序時使用System.exit（0）。 無論如何，你的問題是你使用兩個單獨的_active變量，並且當你在commandCreate上設置_active爲false時 - main看不到變化，導致它使用自己的變量 – SirVaulterScoff 2012-03-14 08:29:30