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小弟我想输入一个简单的字符串,但是编译时总说小弟我有错,希望能够帮小弟我看一下。多谢

热度:54   发布时间:2016-04-24 00:48:53.0
我想输入一个简单的字符串,但是编译时总说我有错,希望能够帮我看一下。谢谢
import java.io.*;

public class IoStream {

public static InputStreamReader in = new InputStreamReader(System.in);
public static BufferedReader br = new BufferedReader(in);
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
String str = br.readLine();
System.out.println(str);
}
}

------解决方案--------------------
“public static InputStreamReader in = new InputStreamReader(System.in);”
最后的;” 是中文的,是不是你在这敲错了,反正要是英文半角下写的。
“String str = br.readLine();”这句需要捕获异常。
改为就没问题了:
Java code
package com.com.com;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;public class IoStream {    public static InputStreamReader in = new InputStreamReader(System.in);    public static BufferedReader br = new BufferedReader(in);    /**     * @param args     * @throws IOException     */    public static void main(String[] args) throws IOException {        // TODO Auto-generated method stub        String str = br.readLine();        System.out.println(str);    }}
------解决方案--------------------
public static InputStreamReader in = new InputStreamReader(System.in); //这个分号不对

另外, br.readLine(); 可能会抛出异常,要做异常捕捉处理或者继续往上抛出异常,所以,可以修改为
Java code
try {    String str = br.readLine();     System.out.println(str);} catch (Exception e) {    e.printStackTrace();}
------解决方案--------------------
Java code
public static InputStreamReader in = new InputStreamReader(System.in);    public static BufferedReader br = new BufferedReader(in);    public static void main(String[] args) {        // TODO Auto-generated method stub        String str = "";        try {            str = br.readLine();        } catch (IOException e) {            e.printStackTrace();        }        System.out.println(str);    }
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