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，面临的唯一问题是，在关闭调用应用程序的 JFrame 时，主 GUI 应用程序框架也会关闭。如何防止主应用程序(框架)关闭？？

我无法更改被调用应用程序的 defaultCloseOperation，但是可以对主应用程序进行更改。跟线程有关系吗？？

这是我执行目标应用程序的应用程序代码

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();
        }

最佳答案

您需要使用 DISPOSE_ON_CLOSE 操作，所以它是 setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE)

EXIT_ON_CLOSE 将是关闭所有窗口的选项，我相信这是您当前遇到的情况。

关于java - 如何防止 JFrame 关闭，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/11300700/