The strange thing is thatRuntimeExceptionis itself subclass ofExceptioni.e. all unchecked exception classes should have been checked exceptions implicitly, BUT they are not.” Unchecked Exception Example The code in the given program does not give any compile-time error. But when we run the exa...
publicclassExceptionClassificationExample{publicstaticvoidmain(String[]args){try{readFile("nonexistent.txt");// 检查异常divideByZero(5,0);// 运行时异常}catch(FileNotFoundException e){System.out.println("File not found: "+e.getMessage());}catch(ArithmeticException e){System.out.println("Divisio...
importjava.io.File;importjava.io.FileReader;importjava.io.IOException;publicclassCheckedExceptionExample{publicstaticvoidmain(String[]args){Filefile=newFile("test.txt");try{FileReaderreader=newFileReader(file);// 读取文件内容}catch(IOExceptione){System.out.println("An error occurred.");e.printStackTr...
由于文件可能不存在,我们需要处理FileNotFoundException。 importjava.io.File;importjava.io.FileNotFoundException;importjava.util.Scanner;publicclassFileReaderExample{publicstaticvoidmain(String[] args){try{Filefile=newFile("nonexistent.txt");Scannerscanner=newScanner(file);while(scanner.hasNextLine()) { ...
Exception 示例 代码语言:javascript 代码运行次数:0 运行 AI代码解释 java 代码解读复制代码importjava.io.*;publicclassExceptionExample{publicstaticvoidmain(String[]args){try{FileReader reader=newFileReader("file.txt");// ...reader.close();}catch(FileNotFoundException e){System.out.println("File not...
class FileIOExample { public static void main(String args[]) throws IOException { FileInputStream fis = new FileInputStream("C:/test.txt"); /*This line FileInputStream(File filename) * throws FileNotFoundException which is a checked * exception */ int charRead=0; /* read() method...
public class SneakyThrowsExample implements Runnable { @SneakyThrows(UnsupportedEncodingException.class) public String utf8ToString(byte[] bytes) { return new String(bytes, "UTF-8"); } @SneakyThrows public void run() { throw new Throwable(); ...
catch( CheckedException ex ) { } example.method2( null ); } 在main()方法中,如果要调用method1(),你必须把这个调用放在try/catch程序块当中,因为它会抛出Checked exception。 相比之下,当你调用method2()时,则不需要把它放在try/catch程序块当中,因为它会抛出的exception不是checked exception,而是runtime ...
class Example { publicstaticvoid main(String args[]) { FileInputStream fis =null; /*This constructor FileInputStream(File filename) * throws FileNotFoundException which is a checked * exception*/ fis =new FileInputStream("B:/myfile.txt"); ...
一、认识`InterruptedException``InterruptedException`是Java中定义的一个检查型异常（checked exception），它必须被显式地捕获或声明抛出。当一个线程在等待、休眠或进行其他可中断的阻塞操作时，另一个线程可以调用其`interrupt()`方法来中断它。如果被中断的线程正在执行一个可中断的阻塞操作，那么该阻塞操作会立即抛出...