利用JAVA中的反射机制获得某个类的信息

来源：互联网发布：西安软件新城招聘信息编辑：程序博客网时间：2024/05/18 03:15

可以使用如下方法，利用JAVA中的反射机制，来获得某个类的信息，包括构造方法、成员属性、成员方法等。

例如，当输入java.lang.Double时，会自动获取Double类的一系列信息：

public final class java.lang.Double extends java.lang.Number
{
public java.lang.Double(double);
public java.lang.Double(java.lang.String);

   public boolean equals(java.lang.Object);
   public static java.lang.String toString(double);
   public java.lang.String toString();
   public int hashCode();
   public static int hashCode(double);
   public static double min(double, double);
   public static double max(double, double);
   public static native long doubleToRawLongBits(double);
   public static long doubleToLongBits(double);
   public static native double longBitsToDouble(long);
   public volatile int compareTo(java.lang.Object);
   public int compareTo(java.lang.Double);
   public byte byteValue();
   public short shortValue();
   public int intValue();
   public long longValue();
   public float floatValue();
   public double doubleValue();
   public static java.lang.Double valueOf(java.lang.String);
   public static java.lang.Double valueOf(double);
   public static java.lang.String toHexString(double);
   public static int compare(double, double);
   public static boolean isNaN(double);
   public boolean isNaN();
   public static boolean isFinite(double);
   public static boolean isInfinite(double);
   public boolean isInfinite();
   public static double sum(double, double);
   public static double parseDouble(java.lang.String);

   public static final double POSITIVE_INFINITY;
   public static final double NEGATIVE_INFINITY;
   public static final double NaN;
   public static final double MAX_VALUE;
   public static final double MIN_NORMAL;
   public static final double MIN_VALUE;
   public static final int MAX_EXPONENT;
   public static final int MIN_EXPONENT;
   public static final int SIZE;
   public static final int BYTES;
   public static final java.lang.Class TYPE;
   private final double value;
   private static final long serialVersionUID;
}

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