testserializable.java

来自「基于LWVCL开发的库」· Java 代码 · 共 40 行

/*
 * This class tests that 
 * - we do not report java.io.Serializable for arrays 
 * - we report the same array modifiers as Sun
 * - we implement isAssignableFrom properly for classes and arrays
 */
public class TestSerializable
{
    class help implements java.io.Serializable
    {
	static final long serialVersionUID = -7043095406159607622L;
    }

    public static void main(String av[])
    {
	Class c = TestSerializable[].class;
	// in JDK 1.1, this outputs 0, in JDK 1.2 and in Kaffe, this outputs 2
	System.out.println(c.getInterfaces().length);
	System.out.println(c.getModifiers());
	Class s = java.io.Serializable.class;
	System.out.println(s.isAssignableFrom(help.class));
	System.out.println(s.isAssignableFrom(help[].class));
	System.out.println(s.isAssignableFrom(TestSerializable.class));
	System.out.println(s.isAssignableFrom(TestSerializable[].class));
	System.out.println(s.isAssignableFrom(boolean.class));
	System.out.println(s.isAssignableFrom((new boolean[0]).getClass()));
    }
}

/* Expected Output:
2
1041
true
true
false
true
false
true
*/