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
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:
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); }