Annotation的部分命令

本文主要介绍了Java中的三种注解:@Override用于重写父类方法;@SuppressWarnings用于禁止特定警告,如unchecked未检查类型警告;@Deprecated用于标记已废弃的方法。通过具体示例帮助读者更好地理解和使用这些注解。
核心提示:1. @Override ---- 重写 继承了父类的方法后, 如果想要重写父类的方法, 集成了JDK1.5以上版本的IDE编辑工具后在方法的上面显示 @Override 2. @SuppressWarnings(unchecked) -- 表示告诉编译器禁止别的元素产生的特殊的警告(warnings), 比如如果运用了集合,

1. @Override ---- 重写

继承了父类的方法后, 如果想要重写父类的方法, 集成了JDK1.5以上版本的IDE编辑工具后在方法的上面显示 @Override

2. @SuppressWarnings("unchecked") -- 表示告诉编译器禁止别的元素产生的特殊的警告(warnings), 比如如果运用了集合,

那么,一般都会提示要使用范型结合在一起,于是就会出现提示警告, 这个警告不会影响到程序的运行.

  1. publicTreeMapgetListBox(Stringsql,Object[]params){//传递一个SQL语句和对象数组
  2. TreeMapmap=newTreeMap();
  3. returnmap;
  4. }
  5. publicTreeMapgetListBox(Stringsql,Object[]params){//传递一个SQL语句和对象数组
  6. TreeMapmap=newTreeMap();
  7. returnmap;
  8. }

可以采用@SuppressWarnings("unchecked") 来去掉警告提示.

  1. @SuppressWarnings("unchecked")
  2. publicTreeMapgetListBox(Stringsql,Object[]params){//传递一个SQL语句和对象数组
  3. TreeMapmap=newTreeMap();
  4. returnmap;
  5. }
  6. @SuppressWarnings("unchecked")
  7. publicTreeMapgetListBox(Stringsql,Object[]params){//传递一个SQL语句和对象数组
  8. TreeMapmap=newTreeMap();
  9. returnmap;
  10. }

3.@SuppressWarnings("deprecation")
对方法不再采用出现的警告提示去掉.

4.

  1. /**
  2. *@deprecateddocumentwhythemethodwasdeprecated
  3. */
  4. @Deprecated
Duplicate class androidx.annotation.AnimRes found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.AnimatorRes found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.AnyRes found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.AnyThread found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.ArrayRes found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.AttrRes found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.BinderThread found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.BoolRes found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.CallSuper found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.CheckResult found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.ChecksSdkIntAtLeast found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.ColorInt found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.ColorLong found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.ColorRes found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.ContentView found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.DimenRes found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.Dimension found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.Discouraged found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.DisplayContext found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.DoNotInline found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.DrawableRes found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.FloatRange found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.FontRes found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.FractionRes found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.GravityInt found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.GuardedBy found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.HalfFloat found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.IdRes found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.InspectableProperty found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.InspectableProperty$EnumEntry found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.InspectableProperty$FlagEntry found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.InspectableProperty$ValueType found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.IntDef found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.IntRange found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.IntegerRes found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.InterpolatorRes found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.Keep found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.LayoutRes found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.LongDef found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.MainThread found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.MenuRes found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.NavigationRes found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.NonNull found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.NonUiContext found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.Nullable found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.PluralsRes found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.Px found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.RawRes found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.RequiresApi found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.RequiresFeature found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.RequiresPermission found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.RequiresPermission$Read found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.RequiresPermission$Write found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.RestrictTo found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.RestrictTo$Scope found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.Size found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.StringDef found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.StringRes found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.StyleRes found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.StyleableRes found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.TransitionRes found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.UiContext found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.UiThread found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.VisibleForTesting found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.WorkerThread found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Duplicate class androidx.annotation.XmlRes found in modules annotation-1.3.0.jar -> annotation-1.3.0 (androidx.annotation:annotation:1.3.0) and annotation-jvm-1.7.0.jar -> annotation-jvm-1.7.0 (androidx.annotation:annotation-jvm:1.7.0) Go to the documentation to learn how to Fix dependency resolution errors. 怎么解决
10-18
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