32 lines
707 B
Markdown
32 lines
707 B
Markdown
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---
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title: Throws
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localeTitle: 抛出
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---
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## 投
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Java throws关键字用于声明异常。它向程序员提供了一个信息，即可能会出现异常，因此程序员最好提供异常处理代码，以便保持正常的流程。
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**_例：_**
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```java
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import java.io.IOException;
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class Testthrows1{
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void m()throws IOException{
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throw new IOException("device error");//checked exception
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}
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void n()throws IOException{
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m();
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}
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void p(){
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try{
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n();
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}catch(Exception e){System.out.println("exception handled");}
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}
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public static void main(String args[]){
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Testthrows1 obj=new Testthrows1();
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obj.p();
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System.out.println("normal flow...");
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}
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}
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```
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