java 写个代码生成器

好的，我可以为您提供一个简单的 Java 代码生成器示例，用于生成一个包含 getter 和 setter 方法的 Java 类。

import java.util.ArrayList;
import java.util.List;

public class CodeGenerator {
    private String className;
    private List<String> properties;

    public CodeGenerator(String className, List<String> properties) {
        this.className = className;
        this.properties = properties;
    }

    public String generateCode() {
        StringBuilder sb = new StringBuilder();

        // Add package and imports
        sb.append("package com.example;\n\n");
        sb.append("import java.util.*;\n\n");

        // Add class declaration
        sb.append("public class ").append(className).append(" {\n\n");

        // Add properties
        for (String property : properties) {
            sb.append("    private ").append(property).append(";\n");
        }
        sb.append("\n");

        // Add constructor
        sb.append("    public ").append(className).append("() {\n");
        sb.append("    }\n\n");

        // Add getters and setters
        for (String property : properties) {
            String capitalizedProperty = property.substring(0, 1).toUpperCase() + property.substring(1);
            sb.append("    public ").append(property).append(" get").append(capitalizedProperty).append("() {\n");
            sb.append("        return ").append(property).append(";\n");
            sb.append("    }\n\n");
            sb.append("    public void set").append(capitalizedProperty).append("(").append(property)
                    .append(" ").append(property).append(") {\n");
            sb.append("        this.").append(property).append(" = ").append(property).append(";\n");
            sb.append("    }\n\n");
        }

        // Close class declaration
        sb.append("}\n");

        return sb.toString();
    }

    public static void main(String[] args) {
        List<String> properties = new ArrayList<>();
        properties.add("String name");
        properties.add("int age");
        properties.add("Date birthDate");

        CodeGenerator generator = new CodeGenerator("Person", properties);
        String generatedCode = generator.generateCode();
        System.out.println(generatedCode);
    }
}

使用示例：

List<String> properties = new ArrayList<>();
properties.add("String name");
properties.add("int age");
properties.add("Date birthDate");

CodeGenerator generator = new CodeGenerator("Person", properties);
String generatedCode = generator.generateCode();
System.out.println(generatedCode);

输出：

package com.example;

import java.util.*;

public class Person {

    private String name;
    private int age;
    private Date birthDate;

    public Person() {
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public Date getBirthDate() {
        return birthDate;
    }

    public void setBirthDate(Date birthDate) {
        this.birthDate = birthDate;
    }

}

这个示例只是一个简单的演示，您可以根据自己的需要进行修改和扩展。