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- Java compares strings for equality
- Java uses the equals method to compare whether the contents of strings are the same. It first determines whether the addresses are equal, and returns true if they are equal; whether the comparison types are the same or not, returns false.
- Javagetting Started 3885 2019-11-14 10:46:20
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- What does Java's >> mean?
- Java's >> is a shift operator, >> is a right shift operator, which moves the operand on the left side of the operator to the right by the number of digits specified on the right side of the operator. Just remember one thing about the right shift rule: the sign bit remains unchanged, and the sign bit is added on the left.
- Javagetting Started 4139 2019-11-14 10:29:37
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- How to delete in java?
- How to delete java: First enter the control panel on your computer; then find the java icon in the control panel; then select disable java to delete it.
- Javagetting Started 6373 2019-11-14 10:27:38
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- How to open binary file in java
- Java reads binary files in bytes, and can also read pictures, music files, video files, etc. In Java, four categories are provided to operate files, namely InputStream, OutputStream, Reader, and Writer.
- Javagetting Started 2812 2019-11-14 10:22:29
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- Is big data java?
- Big data is not Java. Big data belongs to the direction of the Internet, just like the direction of AI based on big data. They are not the same type, but they belong to the relationship of inclusion and being included.
- Javagetting Started 3055 2019-11-14 10:19:10
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- What is java package
- A java package is a container of classes and is used to separate class name spaces. Java uses the package mechanism to prevent naming conflicts, access control, provide search and location of classes, interfaces, enumerations and annotations, etc.
- Javagetting Started 2912 2019-11-14 10:16:33
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- How to save java program?
- How to save a java program: first create a new java file; then open the cmd command and enter "javac"; then enter the folder where the java file is located in cmd; finally enter the java class name to save and run the java file.
- Javagetting Started 15825 2019-11-14 10:14:17
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- What software to use for java programming
- Commonly used software for JAVA programming: Eclipse, MyEclipse, IntelliJ IDEA, NetBeans, BlueJ. Eclipse is an open source, Java-based extensible development platform.
- Javagetting Started 26222 2019-11-14 10:07:42
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- What is java encapsulation?
- In object-oriented programming methods, encapsulation refers to a method of packaging and hiding the implementation details of an abstract functional interface. Encapsulation can be thought of as a protective barrier that prevents the code and data of the class from being randomly accessed by code defined by the external class.
- Javagetting Started 1934 2019-11-14 10:06:24
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- What does java mean?
- Java generally represents a computer programming language and is an object-oriented programming language. Compared with C++, it not only inherits its advantages, but Java also abandons the concepts that are difficult to understand in C++. , so it’s easier to use.
- Javagetting Started 7981 2019-11-14 09:42:19
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- What is the difference between java streams
- Byte stream output: OutputStream, input: InputStream; character stream output: Writer, input: Reader. The character stream processing unit is a 2-byte Unicode character, operating on characters, character arrays, or strings, while the byte stream processing unit is 1 byte, operating on bytes and byte arrays.
- Javagetting Started 1819 2019-11-14 09:36:48
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- What is java's gc
- Java's gc means garbage collection. Memory processing is where programmers are prone to problems. Forgotten or wrong memory recycling can lead to instability or even crash of the program or system. The GC function provided by Java can automatically monitor whether the object exceeds the scope. This achieves the purpose of automatically reclaiming memory.
- Javagetting Started 2802 2019-11-14 09:32:27
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- How to understand this in java
- Java provides a this keyword, which always points to the object that calls the method. Depending on where this appears, there are two situations where this serves as the default reference to an object: in the constructor, it refers to the object that the constructor is initializing; in a method, it refers to the object that calls the method.
- Javagetting Started 2560 2019-11-14 09:25:08
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- What is java stream
- File operations in Java are performed in a stream manner. A stream is an ordered sequence of data in Java memory. Java reads data from sources into memory to form streams, and then writes these streams to other destinations. It is called a stream because this data sequence operates on different parts of the source at different times.
- Javagetting Started 4399 2019-11-14 09:19:06
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- How to run java program
- Java program running steps: edit the source code xxx.java; compile the xxx.java file to generate the bytecode file xxx.class; the class loader in the JVM loads the bytecode file; the execution engine in the JVM finds the entry method main() , execute the methods therein.
- Javagetting Started 7048 2019-11-14 09:18:21
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