java-小記StackTrace

測試方法入口

package com.demo.test.stackTraceTest;


public class Test {
	
	public static void main(String[] args) {
		try {
			System.out.println("into main");
			Say s = new Provider1();
			s.say();
		} catch (Exception e) {

		}
	}
	
}

第一次調用方法

package com.demo.test.stackTraceTest;

public class Provider1 implements Say{

	@Override
	public void say() throws Exception {	
		System.out.println("into provider 1");
		Provider2 p =new Provider2();
		p.say();
		
	}

}

第二次調用方法並打印 調用棧

package com.demo.test.stackTraceTest;

public class Provider2 {

	public void say() {
		System.out.println("into provider 2");
		
		StackTraceElement [] ele = Thread.currentThread().getStackTrace();
		for (StackTraceElement stackTraceElement : ele) {
			System.out.println(stackTraceElement);
		}
	}
}

打印出的調用棧

在方法中使用StackTrace時，Thread.currentThread().getStackTrace()[0]爲當前線程。索引下標1爲當前調用的方法。