finally is executed in any case:
① When there is a return statement in try, the test is as follows:
package study.base_study;
/**
* Created by Taoyongpan on 2017/11/26.
* Test the execution order of try catch finally
*/
public class TryTest {
public static int test1(){
try {
return 1;
}catch (Exception e){
e.printStackTrace ();
}finally {
System.out.println("finally方法");
}
return 0;
}
public static void main(String[] args){
System.out.println(test1());
}
}
The test results are as follows:
finally method
1
Process finished with exit code 0
②When an error is thrown and an exception is thrown, the test is as follows:
package study.base_study;
/**
* Created by Taoyongpan on 2017/11/26.
* Test the execution order of try catch finally
*/
public class TryTest {
public static int test1(){
try {
return 1/0;
}catch (Exception e){
e.printStackTrace ();
}finally {
System.out.println("finally方法");
}
return 0;
}
public static void main(String[] args){
System.out.println(test1());
}
}
The test results are as follows:
finally method
java.lang.ArithmeticException: / by zero
0
at study.base_study.TryTest.test1(TryTest.java:11)
at study.base_study.TryTest.main(TryTest.java:21)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
Process finished with exit code 0
③ When there is also a return statement in the finally method, the return in try will no longer be executed. The test is as follows:
package study.base_study;
/**
* Created by Taoyongpan on 2017/11/26.
* Test the execution order of try catch finally
*/
public class TryTest {
public static int test1(){
try {
return 1;
}catch (Exception e){
e.printStackTrace ();
}finally {
System.out.println("finally方法");
return 0;
}
}
public static void main(String[] args){
System.out.println(test1());
}
}
The test results are as follows:
finally method
0
Process finished with exit code 0