Field.java example

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/*
** $Id: Field.java,v 1.2 2006/03/29 09:27:14 cvs Exp $
*/

package java.lang.reflect;

public final class Field extends AccessibleObject implements Member {

  private Field() {}
  
  public native Class getDeclaringClass();
  
  public native String getName();
  
  public native int getModifiers();
  
  public native Class getType();
  
  public native boolean equals(Object obj);
  
  public int hashCode() {
    return getName().hashCode() ^ getDeclaringClass().getName().hashCode();
  }
  
  public String toString() {
    StringBuffer result = new StringBuffer();
    int mods = getModifiers();

    if ((mods & Modifier.PUBLIC) != 0) {
      result.append("public ");
    }

    if ((mods & Modifier.PROTECTED) != 0) {
      result.append("protected ");
    }

    if ((mods & Modifier.PRIVATE) != 0) {
      result.append("private ");
    }

    if ((mods & Modifier.STATIC) != 0) {
      result.append("static ");
    }

    if ((mods & Modifier.FINAL) != 0) {
      result.append("final ");
    }

    if ((mods & Modifier.VOLATILE) != 0) {
      result.append("volatile ");
    }
  
    if ((mods & Modifier.TRANSIENT) != 0) {
      result.append("transient ");
    }

    result.append(Method.getClassName(getType()));
    result.append(' ');
    result.append(getDeclaringClass().getName());
    result.append('.');
    result.append(getName());

    return new String(result);
  }
  
  public native Object get(Object obj) 
    throws NullPointerException, IllegalArgumentException, IllegalAccessException;
    
  public native boolean getBoolean(Object obj)
    throws NullPointerException, IllegalArgumentException, IllegalAccessException;

  public native byte getByte(Object obj)
    throws NullPointerException, IllegalArgumentException, IllegalAccessException;

  public native char getChar(Object obj)
    throws NullPointerException, IllegalArgumentException, IllegalAccessException;

  public native short getShort(Object obj)
    throws NullPointerException, IllegalArgumentException, IllegalAccessException;

  public native int getInt(Object obj)
    throws NullPointerException, IllegalArgumentException, IllegalAccessException;

  public native float getFloat(Object obj)
    throws NullPointerException, IllegalArgumentException, IllegalAccessException;

  public native double getDouble(Object obj)
    throws NullPointerException, IllegalArgumentException, IllegalAccessException;

  public native long getLong(Object obj)
    throws NullPointerException, IllegalArgumentException, IllegalAccessException;

  public native void set(Object obj, Object value) 
    throws NullPointerException, IllegalArgumentException, IllegalAccessException;
    
  public native void setBoolean(Object obj, boolean z)
    throws NullPointerException, IllegalArgumentException, IllegalAccessException;

  public native void setByte(Object obj, byte b)
    throws NullPointerException, IllegalArgumentException, IllegalAccessException;

  public native void setChar(Object obj, char c)
    throws NullPointerException, IllegalArgumentException, IllegalAccessException;

  public native void setShort(Object obj, short s)
    throws NullPointerException, IllegalArgumentException, IllegalAccessException;

  public native void setInt(Object obj, int i)
    throws NullPointerException, IllegalArgumentException, IllegalAccessException;

  public native void setFloat(Object obj, float f)
    throws NullPointerException, IllegalArgumentException, IllegalAccessException;

  public native void setDouble(Object obj, double d)
    throws NullPointerException, IllegalArgumentException, IllegalAccessException;

  public native void setLong(Object obj, long l)
    throws NullPointerException, IllegalArgumentException, IllegalAccessException;

}