Java 中的 LogRecord getThrown()方法，带示例

原文:https://www . geesforgeks . org/log record-getthrown-method-in-Java-with-examples/

Java . lang . reflect . log record的 getThrown() 方法用于获取与日志事件相关联的可抛出。这用于在日志记录中记录异常，该记录可用于记录消息。

语法:

public Throwable getThrown()

参数:此方法不接受任何内容。

返回:这个方法返回一个可投掷的。

以下程序说明 getThrown()方法: 程序 1:

// Java program to illustrate
// getThrown() method

import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.LogRecord;

public class GFG {

    public static void main(String[] args)
    {

        // Create LogRecord object
        LogRecord logRecord
            = new LogRecord(Level.INFO,
                            "GFG Logger");
        logRecord.setThrown(
            new IOException(
                "Error in Input"));

        // get Throwable object
        Throwable throwObj
            = logRecord.getThrown();

        // print result
        System.out.println(
            "throwable object = "
            + throwObj
                  .toString());
    }
}

Output:

throwable object = java.io.IOException: Error in Input

程序 2:

// Java program to illustrate
// getThrown() method

import java.util.logging.Level;
import java.util.logging.LogRecord;

public class GFG {

    public static void main(String[] args)
    {

        // Create LogRecord object
        LogRecord logRecord
            = new LogRecord(Level.WARNING,
                            "Logger");
        logRecord.setThrown(
            new ArithmeticException());

        // get Throwable object
        Throwable throwObj
            = logRecord.getThrown();

        // print result
        System.out.println(
            "throwable object = "
            + throwObj
                  .toString());
    }
}

Output:

throwable object = java.lang.ArithmeticException

参考文献:https://docs . Oracle . com/javase/10/docs/API/Java/util/logging/logrecord . html # getThrown()

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