问题描述
我有一个Java GUI应用程序，使用反射和加载从中调用另一个Java GUI应用程序。它工作正常唯一的问题是，在关闭调用的应用程序的 JFrame 时，Main GUI 应用程序框架也会关闭。如何防止主应用程序（框架）关闭？
I have a Java GUI application from which another java GUI application is invoked using reflection and loading. It works fine the only problem faced is, on closing the JFrame of invoked application the Main GUI application frame also closes. How can I prevent the main application (frame) from closing??
我无法更改调用的 defaultCloseOperation 应用程序，但是可以对主应用程序进行更改。与线程有什么关系吗？
I cannot change the defaultCloseOperation of the invoked application, However a change to the main application can be made. Does it have any thing to do with threads??
这是执行目标应用程序的应用程序代码
This is my applications code that executes a target application
public class ClassExecutor{
private ClassLoaderOfExtClass classLoader;
private byte[][] ArrayOfClasses;
private String[] ArrayOfBinaryNames;
@SuppressWarnings("rawtypes")
private ArrayList<Class> loadedClasses;
private ArrayList<String> loadedClasesNames;
private Object[] parameters;
@SuppressWarnings("rawtypes")
public ClassExecutor() {
classLoader = new ClassLoaderOfExtClass();
new ArrayList<Class>();
loadedClasses = new ArrayList<Class>();
loadedClasesNames = new ArrayList<String>();
}
@SuppressWarnings("unchecked")
public void execute(File[] file, String[] binaryPaths) {
Object[] actuals = { new String[] { "" } };
Method m = null;
try {
Field classesx=ClassLoaderOfExtClass.class.getDeclaredField("classes");
classesx.setAccessible(true);
} catch (SecurityException e1) {
e1.printStackTrace();
} catch (NoSuchFieldException e1) {
e1.printStackTrace();
}
/*for (int i = 0; i < file.length; i++) {
for (int j = 0; j < file.length; j++) {
try {
@SuppressWarnings("rawtypes")
Class c = classLoader.loadClassCustom(file[i], binaryPaths[i]);
//Fied classex=classLoader.getResource("classes");
}catch(Exception e){
}
}
}
Class<?>[]classesxx= getLoadedClasses(classLoader);
System.out.println("Loaded classes have size "+ classesxx.length);*/
for (int i = 0; i < file.length; i++) {
try {
@SuppressWarnings("rawtypes")
Class c = classLoader.loadClassCustom(file[i], binaryPaths[i]);
try {
if (c.getMethod("main", new Class[] { String[].class }) != null) {
m = c.getMethod("main", new Class[] { String[].class });
} else {
System.out.println("This class does not contain main");
continue;
}
} catch (NoSuchMethodException e) {
// System.out.println("Main not found!!!");
// System.out.println("M here");
// e.printStackTrace(); // not printing stack trace
} catch (SecurityException e) {
e.printStackTrace();
}
} catch (ClassNotFoundException e) {
System.out.println("No such class definition exist!!");
// TODO Auto-generated catch block
// e.printStackTrace();
}
}
try {
m.invoke(null, actuals);
// CallStack.print();
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InvocationTargetException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@SuppressWarnings({ "unchecked", "rawtypes" })
public void execute(ArrayList<byte[]> stuffedFiles,
ArrayList<String> binaryPaths) {
convertToArray(stuffedFiles, binaryPaths);
loadAllClasses(ArrayOfClasses, ArrayOfBinaryNames);
Object[] actuals = { new String[] { "" } };
Method m = null;
/*
* Method[] m1= new Method[10]; for (Class c : loadedClasses) {
* m1=c.getMethods(); } for(Method m2: m1){
* System.out.println(m2.getName()); }
*/
/* System.out.println(loadedClasses.size()); */
for (Class c : loadedClasses) {
/*
* System.out.println(c.toString());
* System.out.println(c.getConstructors());
*/
// for (int i = 1; i < file.size(); i++) {
/*
* for(Method meth : c.getMethods()){ meth.setAccessible(true);
*
* }
*/
try {
if (c.getMethod("main", new Class[] { String[].class }) != null) {
m = c.getMethod("main", new Class[] { String[].class });
break;
} else {
// System.out.println("This class does not contain main");
continue;
}
} catch (NoSuchMethodException e) {
System.out.println("Program does not contain main");
} catch (SecurityException e) {
e.printStackTrace();
}
}
try {
if(parameters==null){
m.invoke(null, actuals);
}
else{
try {
System.out.println("It Fails Here");
m.invoke(null, parameters);
} catch (Exception e) {
System.out.println("Illegal arguments");
}
}
// CallStack.print();
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InvocationTargetException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
推荐答案
这是回复@JeffLaJoie的评论，只是为了澄清，它不需要对其他应用程序的代码进行任何更改。只需要一个额外的方法调用或两个您的应用程序。在运行时设置关闭操作第三方框架。
That was a comment in reply to @JeffLaJoie just to clarify, it would not require any changes to the code of the other app., just an extra method call or two by your app. at run-time to set the close operation of the 3rd party frame.
如果做不到这一点，我能想到的最佳解决方案就是单独启动新框架进程启动一个新的JVM，当用户关闭另一个应用程序时，它和第二个JVM将结束，同时离开原始应用程序。在屏幕上。
Failing that, the best solution I can think of is to start the new frame in a separate Process that starts a new JVM, when the user closes the other app., it and the 2nd JVM will end, while leaving the original app. on-screen.
这篇关于如何防止JFrame关闭的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！