java - IDE 想要将我的 Int 转换为 boolean 值？我的方法之一说它不能应用

Question

我遇到了问题。它想将 int len 更改为 boolean 值？ addNode 方法存在一些问题。
不太确定还要添加什么，这个小盒子对我大喊要添加更多细节。我有所需的所有进口。

public class CustomClassLoader extends ClassLoader {


    private HashMap<String, ClassNode> classes = new HashMap<String, ClassNode>();


    @Override

    public Class<?> loadClass(String name) throws ClassNotFoundException {

        return findClass(name);

    }


    @Override

    protected Class<?> findClass(String name) throws ClassNotFoundException {

        ClassNode node = classes.get(name.replace('.', '/'));

        if (node != null)

            return nodeToClass(node);

        else

            return super.findClass(name);

    }


    public final void addNode(String name, ClassNode node) {

        classes.put(node.name, node);

    }


    private final Class<?> nodeToClass(ClassNode node) {

        if (super.findLoadedClass(node.name) != null)

            return findLoadedClass(node.name);

        ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);

        node.accept(cw);

        byte[] b = cw.toByteArray();

        return defineClass(node.name.replace('/', '.'), b, 0, b.length,

                getDomain());

    }


    private final ProtectionDomain getDomain() {

        CodeSource code = new CodeSource(null, (Certificate[]) null);

        return new ProtectionDomain(code, getPermissions());

    }


    private final Permissions getPermissions() {

        Permissions permissions = new Permissions();

        permissions.add(new AllPermission());

        return permissions;

    }
    private HashMap<String,URL> resources = new HashMap<String,URL>();
    public final void addResource(String name,URL url){

        resources.put(name, url);

    }
    protected URL findResource(String name) {

        if (getSystemResource(name) == null){

            if (resources.containsKey(name))

                return resources.get(name);

            else

                return null;

        }else

            return getSystemResource(name);

    }

    public void loadClassesFromJar(File jar) throws IOException {

        ZipFile jf = new ZipFile(jar);

        ZipEntry e;

        Enumeration<? extends ZipEntry> entries = jf.entries();

        while (entries.hasMoreElements()) {

            e = entries.nextElement();

            if(e.isDirectory())

                continue; //skip directories, as the file names contain the slashes

            InputStream in = jf.getInputStream(e);

            if (e.getName().endsWith(".class")) {

// reads the class

                ClassReader reader = new ClassReader(in);

                ClassNode cn = new ClassNode();

                reader.accept(cn, ClassReader.SKIP_DEBUG

                        | ClassReader.SKIP_FRAMES);

//add the class to our node list

                addNode(e.getName(), cn);

            } else {

//write the resource to a temporary file

                File tmp = File.createTempFile("06loader", "dat");

                FileOutputStream fout = new FileOutputStream(tmp);

                byte[] b = new byte[1024];

                int len;

                while (len = in.read() >= 0) {

                    fout.write(b, 0, len);

                }

                fout.close(); // flushes and closes the file output stream

                addResource(e.getName(),tmp.toURI().toURL());

                tmp.deleteOnExit(); // delete the file once java closes

            }

        }

        jf.close(); // close the jar file

    }

}

Answer 1

是因为这行代码:

while (len = in.read() >= 0) {

应该是:

while ((len = in.read()) >= 0) {

编辑:正如 @Johnny Mopp 所说，这是一个优先级问题，而不是平等与赋值问题。