C# 到 Java - 字典

csharp
Dictionary studentGrades = new Dictionary();
studentGrades.Add("John", 90);
studentGrades.Add("Emily", 85);
studentGrades.Add("Michael", 95);
int johnGrade = studentGrades["John"];
Console.WriteLine("John's grade: " + johnGrade);
studentGrades["Emily"] = 88;
Console.WriteLine("Emily's updated grade: " + studentGrades["Emily"]);
studentGrades.Remove("Michael");
Console.WriteLine("Number of students: " + studentGrades.Count);

java
import java.util.HashMap;
HashMap studentGrades = new HashMap<>();
studentGrades.put("John", 90);
studentGrades.put("Emily", 85);
studentGrades.put("Michael", 95);
int johnGrade = studentGrades.get("John");
System.out.println("John's grade: " + johnGrade);
studentGrades.put("Emily", 88);
System.out.println("Emily's updated grade: " + studentGrades.get("Emily"));
studentGrades.remove("Michael");
System.out.println("Number of students: " + studentGrades.size());

csharp
Dictionary csharpDict = new Dictionary();
csharpDict.Add("Key1", 1);
csharpDict.Add("Key2", 2);
csharpDict.Add("Key3", 3);
HashMap javaDict = new HashMap<>();
for (Map.Entry entry : csharpDict.entrySet()) {
    javaDict.put(entry.getKey(), entry.getValue());
}