java判断object的类型 java怎么判断对象类型

Object param = params.get(i); 
 
   if (param instanceof Integer) { 
 
    int value = ((Integer) param).intValue(); 
 
    prepStatement.setInt(i + 1, value); 
 
   } else if (param instanceof String) { 
 
    String s = (String) param; 
 
    prepStatement.setString(i + 1, s); 
 
   } else if (param instanceof Double) { 
 
    double d = ((Double) param).doubleValue(); 
 
    prepStatement.setDouble(i + 1, d); 
 
   } else if (param instanceof Float) { 
 
    float f = ((Float) param).floatValue(); 
 
    prepStatement.setFloat(i + 1, f); 
 
   } else if (param instanceof Long) { 
 
    long l = ((Long) param).longValue(); 
 
    prepStatement.setLong(i + 1, l); 
 
   } else if (param instanceof Boolean) { 
 
    boolean b = ((Boolean) param).booleanValue(); 
 
    prepStatement.setBoolean(i + 1, b); 
 
   } else if (param instanceof Date) { 
 
    Date d = (Date) param; 
 
    prepStatement.setDate(i + 1, (Date) param); 
 
   }