fieldspy.java

来自「JAVA 工作指南 可以说是程序员必备的东西哦」· Java 代码 · 共 25 行

import java.lang.reflect.Field;
import java.util.List;

public class FieldSpy<T> {
    public boolean[][] b = {{ false, false }, { true, true } };
    public String name  = "Alice";
    public List<Integer> list;
    public T val;

    public static void main(String... args) {
	try {
	    Class<?> c = Class.forName(args[0]);
	    Field f = c.getField(args[1]);
	    System.out.format("Type: %s%n", f.getType());
	    System.out.format("GenericType: %s%n", f.getGenericType());

        // production code should handle these exceptions more gracefully
	} catch (ClassNotFoundException x) {
	    x.printStackTrace();
	} catch (NoSuchFieldException x) {
	    x.printStackTrace();
	}
    }
}