Basic knowledge of Java code (excerpt)

(Excerpt from: Java Classic Getting Started tutorial)

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V: basic knowledge of Java code
1: statement
With a semicolon ";" The end of a line of code is a statement, in Java the statement must be ";" End.
such as: int a = 10;
You can have a block statement, for example:
int i=0;
{
int j = 0;
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j = j+1;
}
i++;

2: Blocks (block)
A block is a collection of statements with {} As a boundary, and blocks can be nested. Such as:
{
int a = 10;
String s = ""; A statement or multiple statements can be
{
SYSTEM.OUT.PRINTLN ("Blocks can be nested");
}
}

Basic knowledge of Java code (excerpt)