在java中，如何从键盘输入到字符串中

import java.util.Scanner;
public class InputString {

public static void main(String[] args) {
Scanner s = new Scanner(System.in);
String str = null;
System.out.println("请输入您想输入的字符串：");
str = s.next();
System.out.println("您输入的是：");
System.out.println(str);
}
}

BufferedReader类 ------JDK1.4
==========================================
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class BoffReader {
public static void main(String[] args) {

BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
try {
String s=in.readLine();
System.out.println(s);
} catch (IOException e) {

e.printStackTrace();
}

}
}
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Scanner类 ----JDK1.5以上

impo