Java LogRecord getThreadID()用法及代碼示例

java.lang.reflect.LogRecord的getThreadID()方法用於獲取消息起源線程的標識符。此方法有助於識別生成記錄器消息的線程。

用法:

public int getThreadID()

參數：此方法不接受任何內容。

返回：此方法返回線程ID。

以下示例程序旨在說明getThreadID()方法：
示例1:

// Java program to illustrate 
// getThreadID() 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.SEVERE, 
                            "Hello Logger"); 
  
        // get Thread ID 
        int id = logRecord.getThreadID(); 
  
        // print 
        System.out.println( 
            "Thread ID = "
            + id); 
    } 
}

輸出：

Thread ID = 1

示例2:

// Java program to illustrate 
// getThreadID() method 
  
import java.util.logging.Level; 
import java.util.logging.LogRecord; 
  
public class GFG { 
  
    public static void main(String[] args) 
    { 
        // start the Thread 
        Thread thread1 = new Thread1(); 
        thread1.start(); 
  
        // Create LogRecord object 
        LogRecord logRecord 
            = new LogRecord(Level.SEVERE, 
                            "Hello Logger"); 
        logRecord.setThreadID((int)thread1 
                                  .getId()); 
  
        // get Thread ID 
        int id = logRecord.getThreadID(); 
  
        // print 
        System.out.println( 
            "Thread ID = "
            + id); 
    } 
} 
  
class Thread1 extends Thread { 
    public void run() 
    { 
        System.out.println("Thread is running..."); 
    } 
}

輸出：

Thread is running...
Thread ID = 11

參考文獻： https://docs.oracle.com/javase/10/docs/api/java/util/logging/LogRecord.html#getThreadID()

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