findLoadedClass
时间: 2023-11-15 09:05:14 浏览: 26
The `findLoadedClass` method is a method defined in the `java.lang.ClassLoader` class. It is used to find the class with the specified name if it has already been loaded by the class loader.
Here is an example of how you can use the `findLoadedClass` method:
```java
ClassLoader classLoader = getClass().getClassLoader();
String className = "com.example.MyClass";
Class<?> loadedClass = classLoader.findLoadedClass(className);
if (loadedClass != null) {
// The class has already been loaded
System.out.println("Class " + className + " is already loaded.");
} else {
// The class has not been loaded yet
System.out.println("Class " + className + " has not been loaded.");
}
```
In this example, the `findLoadedClass` method is called on the class loader to check if the class with the name "com.example.MyClass" has already been loaded. If the `loadedClass` variable is not null, it means that the class has already been loaded. Otherwise, it means that the class has not been loaded yet.
Please note that the `findLoadedClass` method can only find classes that have been loaded by the specific class loader instance. If the class has not been loaded or has been loaded by a different class loader, it will return null.
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