You asked: How do you create a generic class in Java?

To create objects of a generic class, we use the following syntax. // To create an instance of generic class BaseType obj = new BaseType () Note: In Parameter type we can not use primitives like ‘int’,’char’ or ‘double’. How do you create a generic class? To update the Box class to use generics, you …

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What happens when SQL database is full?

When in full recovery model, the default for SQL Server databases, you must back the database and log file up, otherwise the transaction log file will grow until you run out of hard drive space. … This is done so that the space within the transaction log can be re-used. What happens when database is …

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Frequent question: What is readUTF in Java?

The java. io. DataInputStream. readUTF() method reads in a string that has been encoded using a modified UTF-8 format. The string of character is decoded from the UTF and returned as String. What is readUTF and writeUTF in Java? The writeUTF() and readUTF() write the length of the String (in bytes, when encoded as UTF-8) …

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How do you delete all records from a table in SQL?

How delete all data from table in SQL? To delete every row in a table: Use the DELETE statement without specifying a WHERE clause. With segmented table spaces, deleting all rows of a table is very fast. … Use the TRUNCATE statement. The TRUNCATE statement can provide the following advantages over a DELETE statement: … …

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Where is WP Cron PHP?

Where are WordPress cron jobs stored? It’s stored in the database inside wp_options under the option_name cron . Where is WP-config php located? The wp-config. php file is usually located in the root folder of your website with other folders like /wp-content/. How do you check if WP cron is enabled? View and Control WordPress …

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How do you count words in Java?

You can count words in Java String by using the split() method of String. A word is nothing but a non-space character in String, which is separated by one or multiple spaces. By using a regular expression to find spaces and split on them will give you an array of all words in a given …

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What is static and final in Java with example?

A field marked static is the same for every instance of a class. … The static keyword means the value is the same for every instance of the class. The final keyword means once the variable is assigned a value it can never be changed. The combination of static final in Java is how to …

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What is the query for date in SQL?

SQL Server comes with the following data types for storing a date or a date/time value in the database: DATE – format YYYY-MM-DD. DATETIME – format: YYYY-MM-DD HH:MI:SS. SMALLDATETIME – format: YYYY-MM-DD HH:MI:SS. What is the SQL query for current date? To get the current date and time in SQL Server, use the GETDATE() function. …

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Question: Is array a reference in Java?

Arrays are Objects, yes, but nothing in Java is passed by reference. All parameter passing is by value. In the case of an Object, what gets passed is a reference to the Object (i.e. a pointer), by value. Is an array a reference type Java? In addition, array types in Java are reference types because …

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