3.2.2 Constantsand variables can be used in the program to express those that may change the amount of data corresponding to, in C + +, we use constants to express those always remain unchanged data volume. In simple terms, the values, characters,
3.2.2 Constantsand variables can be used in the program to express those that may change the amount of data corresponding to, in C + +, we use constants to express those always remain unchanged data volume. In simple terms, the values, characters,
Objective:
In peacetime we use the string is generally used to get directly, very little in-depth to think about this knowledge , leading to others in the examination of our time, will ask the string str = new String ("123"); This line of code
Before writing, we will look at a few questions, if you have a good understanding of these issues, it can not read this article, if you do not understand, then you can look at my thoughts.Question 1:
public static void main(String[] args){ String
Theory
JVM Virtual Memory Distribution:The program counter is the pipeline of the JVM execution program and holds some jump instructions.The local method stack is the stack used by the JVM to invoke the operating system method.The virtual
Touch Java constant Pool
Java constant pool is an enduring topic, but also the interviewer's favorite, the topic is full of patterns, the side dishes have already heard of the constant pool, this time a good summary.
Theory
A piece of cake first.
I. Related Concepts
What is a constantA constant is represented by a final modified member variable, which cannot be changed once the value is given!There are three final modified variables: Static variables, instance variables, and local
This essay is reproduced, the original paste address: Java constant pool understanding and summary.(In fact, Java's Chang is a bit like the constant store of storing string constants in C + +).I. Related Concepts
What is a constantA
I. Related Concepts
What is a constantA constant is represented by a final modified member variable, which cannot be changed once the value is given!There are three final modified variables: static variables, instance variables, and local
first, related concepts1. What isConstantsA constant is represented by a final modified member variable, which cannot be changed once the value is given!There are three final modified variables: Static variables, instance variables, and local
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