『テンプレートモード』

テンプレートモード

1.テンプレートパターンの紹介

2.コード実現

public abstract class SoyaBeanMilk {
    public final void make(){
      materialSelection();
      if (supportAddSeasoning())
          addSeasoning();
      invasion();
      grind();
    }

    protected void materialSelection(){
        System.out.println("  ....");
    }
    //    ，     
    protected abstract void addSeasoning();
    protected void invasion(){
        System.out.println("  ....");
    }
    protected void grind(){
        System.out.println("  ....");
    }
    //          ，      addSeasoning  
    //  
    protected boolean supportAddSeasoning(){
        return true;
    }
}

public class RedSoyaBeanMilk extends SoyaBeanMilk{
    @Override
    protected void addSeasoning() {
        System.out.println("    ....");
    }
}

public class PureSoyaBeanMilk extends SoyaBeanMilk{
    @Override
    protected void addSeasoning() {
        //   
    }
    @Override
    protected boolean supportAddSeasoning() {
        return false;
    }
}

public class TemplateTest {
    public static void main(String[] args) {
        //    
        SoyaBeanMilk redSoyaBeanMilk  = new RedSoyaBeanMilk();
        redSoyaBeanMilk.make();

        System.out.println("============================");
        //   ，   
        SoyaBeanMilk pureSoyaBeanMilk = new PureSoyaBeanMilk();
        pureSoyaBeanMilk.make();
    }
}

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