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JAVA Basics



JAVA Intermediate



Difficulty

Stage modular practice Difficulty Explain the length of the video
JAVA Basics HelloWorld practice - Environment variable configuration 2 Points 54 second
JAVA Basics HelloWorld practice -Hello Java 3 Points 14 second
JAVA Basics HelloWorld practice - In eclipse Run in JAVA Program 1 Points 37 second
JAVA Basics object-oriented practice -Item 2 Points 16 second
JAVA Basics object-oriented practice - Properties 1 Points 31 second
JAVA Basics object-oriented practice - method 2 Points 15 second
JAVA Basics Variables practice - Variable type 3 Points 4 second
JAVA Basics Variables practice - Literal value 5 Points 44 second
JAVA Basics Variables practice - Type conversion 1 Points 14 second
JAVA Basics Variables practice - Naming conventions 2 Points 33 second
JAVA Basics Variables practice - Scope 1 Points 26 second
JAVA Basics Variables practice -final 1 Points 41 second
JAVA Basics Operator practice - Sum 2 Points 2 second
JAVA Basics Operator practice - Self increasing 2 Points 26 second
JAVA Basics Operator practice -BMI 4 Points 19 second
JAVA Basics Operator practice - Relational operators 3 Points 2 second
JAVA Basics Operator practice - Logical operators 2 Points 29 second
JAVA Basics Operator practice - Fast calculation 2x16 1 Points 54 second
JAVA Basics Operator practice - Bit operators 1 Points 7 second
JAVA Basics Operator practice - Assignment operator 35 second
JAVA Basics Operator practice - Determine whether it is a working day 1 Points 57 second
JAVA Basics Control process practice -BMI 5 Points 4 second
JAVA Basics Control process practice - leap year 4 Points 42 second
JAVA Basics Control process practice - season 4 Points 31 second
JAVA Basics Control process practice - Factorial 4 Points 44 second
JAVA Basics Control process practice - Beggar 4 Points 44 second
JAVA Basics Control process practice - Ignore multiples 2 Points 15 second
JAVA Basics Control process practice - millionaire 16 Points 33 second
JAVA Basics Control process practice - Golden section point 13 Points 44 second
JAVA Basics Control process practice - Number of daffodils 4 Points 16 second
JAVA Basics Control process practice - Elementary school arithmetic problems 5 Points 14 second
JAVA Basics Array practice - Minimum value of array 3 Points 49 second
JAVA Basics Array practice - Array inversion 6 Points 6 second
JAVA Basics Array practice - Sort 1 Points 49 second
JAVA Basics Array practice - Maximum 2 Points 44 second
JAVA Basics Array practice - Merge arrays 3 Points 24 second
JAVA Basics Array practice - Two dimensional array 7 Points 4 second
JAVA Basics Array practice - Two dimensional array sorting 10 Points 35 second
JAVA Basics Classes and objects practice - quote 1 Points 43 second
JAVA Basics Classes and objects practice - Armor 3 Points 27 second
JAVA Basics Classes and objects practice - treatment 1 Points 39 second
JAVA Basics Classes and objects practice - Construction method 2 Points 43 second
JAVA Basics Classes and objects practice - Construction method (this) 5 Points 46 second
JAVA Basics Classes and objects practice - Pass reference 7 Points 9 second
JAVA Basics Classes and objects practice - Bag 1 Points 48 second
JAVA Basics Classes and objects practice - Class properties 1 Points 26 second
JAVA Basics Classes and objects practice - Class methods 3 Points 24 second
JAVA Basics Classes and objects practice - Property initialization 3 Points 34 second
JAVA Basics Classes and objects practice - Singleton mode 1 Points 10 second
JAVA Basics Classes and objects practice - Enumerate 2 Points 12 second
JAVA Basics Interface and inheritance practice - Interface 44 second
JAVA Basics Interface and inheritance practice - Type conversion 1 Points 50 second
JAVA Basics Interface and inheritance practice - rewrite 2 Points 25 second
JAVA Basics Interface and inheritance practice - Polymorphism 3 Points 49 second
JAVA Basics Interface and inheritance practice - Hide 2 Points 8 second
JAVA Basics Interface and inheritance practice -super 1 Points 30 second
JAVA Basics Interface and inheritance practice -Object 1 Points 36 second
JAVA Basics Interface and inheritance practice -final 1 Points 55 second
JAVA Basics Interface and inheritance practice - Abstract classes 1 Points 25 second
JAVA Basics Interface and inheritance practice - Inner class 51 second
JAVA Basics Interface and inheritance practice - Default method 5 Points 9 second
JAVA Basics Interface and inheritance practice -Animal Class N/A
JAVA Basics Interface and inheritance practice -Spider Class N/A
JAVA Basics Interface and inheritance practice -Pet Interface N/A
JAVA Basics Interface and inheritance practice -Cat Class N/A
JAVA Basics Interface and inheritance practice -Fish Class N/A
JAVA Basics Numbers and strings practice - Packing and unpacking 2 Points 11 second
JAVA Basics Numbers and strings practice - String conversion 2 Points 56 second
JAVA Basics Numbers and strings practice - Mathematical methods 5 Points 49 second
JAVA Basics Numbers and strings practice - Prime number 12 Points 50 second
JAVA Basics Numbers and strings practice - yellow crane 1 Points 3 second
JAVA Basics Numbers and strings practice -Character 2 Points 56 second
JAVA Basics Numbers and strings practice - Random string 13 Points 49 second
JAVA Basics Numbers and strings practice - String array sort 5 Points 11 second
JAVA Basics Numbers and strings practice - Exhaustive method to crack the password 9 Points 54 second
JAVA Basics Numbers and strings practice - The first letter of each word is converted to uppercase 1 Points 31 second
JAVA Basics Numbers and strings practice - English tongue twister 1 Points 49 second
JAVA Basics Numbers and strings practice - Interval uppercase and lowercase mode 1 Points 30 second
JAVA Basics Numbers and strings practice - The last letter is capitalized 56 second
JAVA Basics Numbers and strings practice - Put the last one two Words are capitalized 1 Points 43 second
JAVA Basics Numbers and strings practice - Compare strings 16 Points 54 second
JAVA Basics Numbers and strings practice -StringBuffer Performance 7 Points 27 second
JAVA Basics Numbers and strings practice -MyStringBuffer N/A
JAVA Basics Numbers and strings practice - Performance comparison 3 Points 18 second
JAVA Basics Date practice - Date 6 Points 52 second
JAVA Basics Date practice - Date formatting 10 Points 51 second
JAVA Basics Date practice -Calendar 2 Points 25 second
JAVA Intermediate Exception handling practice - Abnormal 4 Points 2 second
JAVA Intermediate Exception handling practice - Exception handling 3 Points 32 second
JAVA Intermediate Exception handling practice - Exception classification 2 Points 59 second
JAVA Intermediate Exception handling practice -Throwable 1 Points 26 second
JAVA Intermediate Exception handling practice - Custom exception 4 Points 51 second
JAVA Intermediate Exception handling practice - Abnormal synthesis 1 5 Points 18 second
JAVA Intermediate Exception handling practice - Abnormal synthesis 2 4 Points 41 second
JAVA Intermediate I/O practice - Traverse folders 3 Points 6 second
JAVA Intermediate I/O practice - Traverse subfolders 3 Points 36 second
JAVA Intermediate I/O practice - Flow 50 second
JAVA Intermediate I/O practice - Write data to file 1 Points 58 second
JAVA Intermediate I/O practice - Split file 6 Points 47 second
JAVA Intermediate I/O practice - Merge files 4 Points 13 second
JAVA Intermediate I/O practice - Close the flow 3 Points 36 second
JAVA Intermediate I/O practice - File encryption 10 Points 32 second
JAVA Intermediate I/O practice - File decryption 2 Points 7 second
JAVA Intermediate I/O practice - The number corresponds to Chinese 1 Points 10 second
JAVA Intermediate I/O practice - Remove BOM 8 Points 57 second
JAVA Intermediate I/O practice - Remove comments 4 Points 20 second
JAVA Intermediate I/O practice - Write two numbers to the file , Then read the two numbers separately 3 Points 45 second
JAVA Intermediate I/O practice - Serialize array 3 Points 2 second
JAVA Intermediate I/O practice - Automatically create classes 5 Points 27 second
JAVA Intermediate I/O practice - Copy files 4 Points 49 second
JAVA Intermediate I/O practice - Copy folder 4 Points 25 second
JAVA Intermediate I/O practice - Find the contents of the file 4 Points 6 second
JAVA Intermediate Collection framework practice - use LinkedList realization Stack Stack 5 Points 9 second
JAVA Intermediate Collection framework practice - Hero binary tree 3 Points 17 second
JAVA Intermediate Collection framework practice - Compare bubbling , The performance difference between selection method and binary tree sorting 9 Points 34 second
JAVA Intermediate Collection framework practice - Find content performance comparison 6 Points 3 second
JAVA Intermediate Collection framework practice - Custom string hashcode 8 Points 57 second
JAVA Intermediate Collection framework practice - Customize MyHashMap 11 Points 24 second
JAVA Intermediate Collection framework practice - Content search performance comparison 3 Points 3 second
JAVA Intermediate Collection framework practice -HashSet 2 Points 44 second
JAVA Intermediate Collection framework practice - Statistical probability 2 Points 50 second
JAVA Intermediate Collection framework practice - Non repeating random numbers 1 Points 14 second
JAVA Intermediate Collection framework practice - Judge whether it is the same 1 Points 31 second
JAVA Intermediate Collection framework practice -MyStringBuffer 12 Points 24 second
JAVA Intermediate Collection framework practice - Support generic ArrayList 3 Points 1 second
JAVA Intermediate Collection framework practice - Delete ArrayList Data in 5 Points 22 second
JAVA Intermediate Collection framework practice - Insert data after 1 Points 58 second
JAVA Intermediate Collection framework practice - Insert data in the middle 2 Points 4 second
JAVA Intermediate Collection framework practice - reversal key and value 2 Points 3 second
JAVA Intermediate Collection framework practice - Neither repeat , And in order 2 Points 18 second
JAVA Intermediate Collection framework practice - Custom order TreeSet 2 Points 37 second
JAVA Intermediate Collection framework practice -Comparable 51 second
JAVA Intermediate Generic practice - Generic 42 second
JAVA Intermediate Generic practice - Support generic binary tree 3 Points 36 second
JAVA Intermediate Generic practice - extends 3 Points 3 second
JAVA Intermediate Generic practice - Binary tree 4 Points 57 second
JAVA Intermediate Generic practice - Whether a parent generic can be converted to a child generic ? 1 Points 59 second
JAVA Intermediate Lambda practice -Comparator 4 Points 10 second
JAVA Intermediate Lambda practice - Reference static methods 2 Points 59 second
JAVA Intermediate Lambda practice - Methods that reference objects in containers 3 Points 58 second
JAVA Intermediate Lambda practice - Reference constructor 9 Points 31 second
JAVA Intermediate Lambda practice - Aggregation operation 4 Points 2 second
JAVA Intermediate Multithreading practice - Find file contents synchronously 6 Points 33 second
JAVA Intermediate Multithreading practice - Hero charge N/A
JAVA Intermediate Multithreading practice - Crack the password 10 Points 16 second
JAVA Intermediate Multithreading practice - Precede class methods with modifiers synchronized N/A
JAVA Intermediate Multithreading practice - Thread safe MyStack N/A
JAVA Intermediate Multithreading practice - Thread safe MyStack 2 Points 22 second
JAVA Intermediate Multithreading practice - Deadlock 3 Points 18 second
JAVA Intermediate Multithreading practice - Thread interaction 3 Points 11 second
JAVA Intermediate Multithreading practice - Multithreaded interaction 9 Points 55 second
JAVA Intermediate Multithreading practice - Producer consumer issues 8 Points 54 second
JAVA Intermediate Multithreading practice - Find file contents synchronously with thread pool N/A
JAVA Intermediate Multithreading practice - With the help of Lock, hold MyStack Change to thread safe class 1 Points 9 second
JAVA Intermediate Multithreading practice - With the help of tryLock Solve the deadlock problem 3 Points 32 second
JAVA Intermediate Multithreading practice - Producer consumer issues 5 Points 35 second
JAVA Intermediate Multithreading practice - use AtomicInteger To replace Hero Class synchronized 4 Points 38 second
JAVA Intermediate JDBC practice - disposable Insert 100 Data 1 Points 44 second
JAVA Intermediate JDBC practice - Increase Delete Change 3 Points 2 second
JAVA Intermediate JDBC practice - Paging query 3 Points 15 second
JAVA Intermediate JDBC practice - Performance comparison 2 Points 1 second
JAVA Intermediate JDBC practice - Paging query 1 Points 27 second
JAVA Intermediate JDBC practice - Self growth id 3 Points 10 second
JAVA Intermediate JDBC practice - Business 2 Points 34 second
JAVA Intermediate JDBC practice -ORM 3 Points 39 second
JAVA Intermediate JDBC practice -ItemDAO 1 Points 16 second
JAVA Intermediate JDBC practice - Database connection pool 3 Points 37 second
JAVA Intermediate Graphical interface practice - Start the window at the last closed position 5 Points 10 second
JAVA Intermediate Graphical interface practice - Toggle display 1 Points 14 second
JAVA Intermediate Graphical interface practice - Move up, down, left and right 1 Points 44 second
JAVA Intermediate Graphical interface practice - Mode and size changes 1 Points 31 second
JAVA Intermediate Graphical interface practice - The button on the calculator 2 Points 11 second
JAVA Intermediate Graphical interface practice -SplitPanel 2 Points 28 second
JAVA Intermediate Graphical interface practice - According to eclipse Style display multiple java File 10 Points 8 second
JAVA Intermediate Graphical interface practice - Null to judge 1 Points 36 second
JAVA Intermediate Graphical interface practice - Digital verification 50 second
JAVA Intermediate Graphical interface practice - Account password verification 2 Points 12 second
JAVA Intermediate Graphical interface practice - yellow crane 3 Points 14 second
JAVA Intermediate Graphical interface practice - Compound interest calculator 9 Points 49 second
JAVA Intermediate Graphical interface practice - progress bar 2 Points 6 second
JAVA Intermediate Graphical interface practice - Show folder copy progress bar 6 Points 12 second
JAVA Intermediate Graphical interface practice - Complete a complete Notepad interface 2 Points 19 second
JAVA Intermediate Graphical interface practice - Count the number of files 7 Points 58 second
JAVA Intermediate Graphical interface practice - Add 6 Points 27 second
JAVA Intermediate Graphical interface practice - Delete 5 Points 13 second
JAVA Intermediate Graphical interface practice - Edit 4 Points 23 second
JAVA Intermediate Graphical interface practice - Modify 4 Points 5 second
JAVA Intermediate Graphical interface practice - Use the buttons to sort 17 Points 23 second
JAVA Intermediate Graphical interface practice - Use the drop-down box to page 18 Points 14 second
JAVA Intermediate Graphical interface practice - Find the contents of the file 5 Points 18 second
JAVA Intermediate Network programming practice - Judge how many are available in this network segment ip Address 5 Points 27 second
JAVA Intermediate Network programming practice - Server and client chat 3 Points 53 second
JAVA Intermediate Network programming practice - Chat robot database 6 Points 25 second
JAVA Intermediate Network programming practice - Chat program with graphical interface 6 Points 5 second