Java中printStackTrace()用法示例

try {
    // 可能会产生异常的代码
    int result = 10 / 0; // 这将导致一个ArithmeticException因为除以零
} catch (ArithmeticException e) {
    // 打印栈追踪信息到标准错误流
    e.printStackTrace();
}

try {
    // 可能会产生异常的代码
} catch (Exception e) {
    // 打印栈追踪信息到指定的打印流
    PrintStream fileStream = new PrintStream(new FileOutputStream("error.log"));
    e.printStackTrace(fileStream);
    fileStream.close();
}

public class DivideByZeroExample {
    public static void main(String[] args) {
        try {
            int result = 10 / 0;
        } catch (ArithmeticException e) {
            System.err.println("ArithmeticException caught!");
            e.printStackTrace();
        }
    }
}

public class ArrayIndexOutOfBoundsExample {
    public static void main(String[] args) {
        try {
            int[] numbers = {1, 2, 3};
            int number = numbers[5]; // 这将抛出一个数组越界异常
        } catch (ArrayIndexOutOfBoundsException e) {
            System.err.println("ArrayIndexOutOfBoundsException caught!");
            e.printStackTrace();
        }
    }
}

import java.io.FileInputStream;
import java.io.FileNotFoundException;

public class FileNotFoundExceptionExample {
    public static void main(String[] args) {
        try {
            FileInputStream file = new FileInputStream("nonexistent.txt");
        } catch (FileNotFoundException e) {
            System.err.println("FileNotFoundException caught!");
            e.printStackTrace();
        }
    }
}

import java.io.PrintStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;

public class PrintStackTraceToFile {
    public static void main(String[] args) {
        try {
            int result = 10 / 0;
        } catch (ArithmeticException e) {
            try {
                PrintStream ps = new PrintStream(new FileOutputStream("error.log"));
                e.printStackTrace(ps); // 输出到文件
                ps.close();
            } catch (FileNotFoundException ex) {
                ex.printStackTrace();
            }
        }
    }
}

import java.io.PrintStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;

public class TryWithResourcesExample {
    public static void main(String[] args) {
        try {
            int result = 10 / 0;
        } catch (ArithmeticException e) {
            try (PrintStream ps = new PrintStream(new FileOutputStream("error.log"))) {
                e.printStackTrace(ps); // 输出到文件
            } catch (FileNotFoundException ex) {
                ex.printStackTrace();
            }
        }
    }
}