Androidビルダー(Builder)モードの場合を詳しく紹介

Notification noti = new Notification.Builder(context).build();AlertDialog dialog = new AlertDialog.Builder(context).create();

/**
 * author : stone
 * email  : aa86799@163.com
 * time   : 15/7/3 10 26
 */
public class TestBuilder {

    private int a;
    private String b;

    public int getA() {
        return a;
    }

    public String getB() {
        return b;
    }

    protected TestBuilder(Builder builder) {
        this.a = builder.ma;
        this.b = builder.mb;
    }

    public static class Builder {
        private int ma;
        private String mb;

        public Builder createA(int a) {
            this.ma = a;
            return this;
        }

        public Builder showB(String b) {
            this.mb = b;
            return this;
        }

        public TestBuilder build() {
            return new TestBuilder(this);
        }
    }

    public static void main(String[] args) {
        TestBuilder tb = new TestBuilder.Builder()
                .createA(88)
                .showB("susan")
                .build();
        
    }
}