Interpreter (interpreter) mode of Java design pattern

Interpreter Definition:

Defines the grammar of a language and creates an interpreter to interpret the sentences in that language.

Interpreter does not seem to have a wide range of facets, it describes how a language interpreter is constructed, and in practical applications we may rarely construct a language grammar. Let's just take a quick look at:

The first step is to create an interface to describe the common operation.

public interface AbstractExpression {
　　 void interpret( Context context );
}

And look at some global information outside of the interpreter.

public interface Context { }

The specific implementations of Abstractexpression are divided into two types: non-terminal expressions and non-non-terminal expressions:

public class TerminalExpression implements AbstractExpression {
　　 public void interpret( Context context ) { }
}

No non-terminal expression is required for a rule in the grammar:

public class NonterminalExpression implements AbstractExpression {
　　 private AbstractExpression successor;
　　 public void setSuccessor( AbstractExpression successor ) {
　　　　 this.successor = successor;
　　 }
　　 public AbstractExpression getSuccessor() {
　　　　 return successor;
　　 }
　　 public void interpret( Context context ) { }
}