关于Thread.getStrackTrace

关于Thread.getStrackTrace

说明文档：

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即返回当前线程的堆栈元素

例：

public static void main(String[] args) {
    StackTraceElement[] stackTraceElements=Thread.currentThread().getStackTrace();
    System.out.println("The stackTraceElements length:"+stackTraceElements.length);
    for(int i=0;i<stackTraceElements.length;i++){
        System.out.println("\n---the  "+i+"  element"+"---");
        System.out.println("toString:"+stackTraceElements[i].toString());
        System.out.println("ClassName:"+stackTraceElements[i].getClassName());
        System.out.println("FileName:"+stackTraceElements[i].getFileName());
        System.out.println("LineNumber:"+stackTraceElements[i].getLineNumber());
        System.out.println("MethodName:"+stackTraceElements[i].getMethodName());
    }
    printStackInfos();
}
private static void printStackInfos(){
    StackTraceElement[] stackTraceElements = Thread.currentThread().getStackTrace();
    System.out.println("\nCalled in printStackInfos() method!!!");
    System.out.println("The stackTraceElements length:"+stackTraceElements.length);
    for(int i =0;i<stackTraceElements.length;i++){
        System.out.println("\n---the  "+i+"  element"+"---");
        System.out.println("toString:"+stackTraceElements[i].toString());
        System.out.println("ClassName:"+stackTraceElements[i].getClassName());
        System.out.println("FileName:"+stackTraceElements[i].getFileName());
        System.out.println("LineNumber:"+stackTraceElements[i].getLineNumber());
        System.out.println("MethodName:"+stackTraceElements[i].getMethodName());
    }
     
}

输出：

The stackTraceElements length:2
 
---the  0  element---
toString:java.lang.Thread.getStackTrace(Thread.java:1567)
ClassName:java.lang.Thread
FileName:Thread.java
LineNumber:1567
MethodName:getStackTrace
 
---the  1  element---
toString:Exchange.main(Exchange.java:10)
ClassName:Exchange
FileName:Exchange.java
LineNumber:10
MethodName:main
 
Called in printStackInfos() method!!!
The stackTraceElements length:3
 
---the  0  element---
toString:java.lang.Thread.getStackTrace(Thread.java:1567)
ClassName:java.lang.Thread
FileName:Thread.java
LineNumber:1567
MethodName:getStackTrace
 
---the  1  element---
toString:Exchange.printStackInfos(Exchange.java:24)
ClassName:Exchange
FileName:Exchange.java
LineNumber:24
MethodName:printStackInfos
 
---the  2  element---
toString:Exchange.main(Exchange.java:20)
ClassName:Exchange
FileName:Exchange.java
LineNumber:20
MethodName:main

即当调用该函数时：main方法最先入方法栈，然后是printStackInfos，最后是

getStackTrace

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