1.你使用的是jdk1.4，Scanner是jdk1.5以后才有的 2.你没有导入这个类，import java.util.Scanner 是不是没导包，java.util.
InputStreamReader(InputStreamin)// 创建一个使用默认字符集的 InputStreamReader。 InputStreamReader(InputStreamin,Charsetcs)// 创建使用给定字符集的 InputStreamReader。 InputStreamReader(InputStreamin,CharsetDecoderdec)// 创建使用给定字符集解码器的 InputStreamReader。 InputStreamReader(InputStreamin,Stringch...
Fields inherited from class java.io.Reader lock Constructor Summary Constructors Constructor and Description InputStreamReader(InputStreamin) Creates an InputStreamReader that uses the default charset. InputStreamReader(InputStreamin,Charsetcs) Creates an InputStreamReader that uses the given charset. ...
values() Returns an array containing the constants of this enum type, in the order they are declared. Methods inherited from class java.lang.Enum compareTo, equals, getDeclaringClass, hashCode, name, ordinal, valueOf Methods inherited from class java.lang.Object getClass, notify, notifyAll, wa...
The DataInput interface provides for reading bytes from a binary stream and reconstructing from them data in any of the Java primitive types.
NOTE:This method appends the values to the existing list (if any). UsesetInputSummaries(java.util.Collection)orwithInputSummaries(java.util.Collection)if you want to override the existing values. Parameters: inputSummaries- Summary information about the inputs. ...
Defines the HTML input control—for example, as a checkbox, radio button, or text box, among others. If this attribute is omitted, the default type istext. To learn about input fields, seeSetting Property Values in Forms. You can also define a submit control by settingtypeto one of these...
Retrieve and hold the contents of the preferences file 'name', returning a SharedPreferences through which you can retrieve and modify its values. (Inherited from ContextWrapper) GetString(Int32, Object[]) Returns a localized string from the application's package's default string table. (Inher...
java.util.Scanner 是Java5的新特征,主要功能是简化文本扫描,这个类最实用的地方表现在获取控制台输入。当通过 new Scanner(System.in) 创建一个Scanner,控制台会一直等待输入,直到敲回车键结束,把所输入的内容传给 Scanner,作为扫描对象。如果要获取输入的内容,则只需要调用 Scanner 的 nextLine() 方法即可。
java.util.Scanner是Java5的新特征,主要功能是简化文本扫描,这个类最实用的地方表现在获取控制台输入。当通过new Scanner(System.in)创建一个Scanner,控制台会一直等待输入,直到敲回车键结束,把所输入的内容传给Scanner,作为扫描对象。如果要获取输入的内容,则只需要调用Scanner的nextLine()方法即可。