java - Java中如何避免重复？

Question

我有这样的结构:

private Plan createPlan() {
  return new Plan(
        project(),
        "Plan Name", "PLANKEY")
        .description("Plan created from (enter repository url of your 
         plan)")
        .stages(
                new Stage("Stage 1")
                        .jobs(new Job("Build & run", "RUN")
                                .tasks(
                                        new ScriptTask().inlineBody("echo Hello!”))),

                new Stage("Stage 2”)
                        .jobs(new Job("Build & run", "RUN")
                                .tasks(
                                        new ScriptTask().inlineBody("echo Hello!”))),

                new Stage("Stage 3”)
                        .jobs(new Job("Build & run", "RUN")
                                .tasks(
                                        new ScriptTask().inlineBody("echo Hello!”))),

                new Stage("Stage 4”)
                        .jobs(new Job("Build & run", "RUN")
                                .tasks(
                                        new ScriptTask().inlineBody("echo Hello!”))),

);
}

如何避免重复代码？ “新阶段”内的代码段是相同的，除了新阶段的名称(“阶段 1”、“阶段 2”、“阶段 3”...)之外，具有相同的参数。

谢谢!

Answer 1

提取方法:

private Stage createStage(String name) {
    return new Stage(name)
                    .jobs(new Job("Build & run", "RUN")
                            .tasks(
                                    new ScriptTask().inlineBody("echo Hello!”))
}

并简单地传递舞台名称

...
.stages(createStage("Stage 1"), createStage("Stage 2"), createStage("Stage 3"), createStage("Stage 4"))