return 1; } finally { return 2; } When the Try block executes its return, the finally block is entered with the reason of returning the value 1. However, inside the finally block the value 2 is returned, so the initial intention is forgotten. In fact, if any of the other code in t...
1 public static final java.lang.String test(); 2 Code: 3 Stack=1, Locals=4, Args_size=0 4 0: ldc #16; //String 5 2: astore_0 6 3: ldc #18; //String try 7 5: astore_0 8 6: aload_0 9 7: astore_3 10 8: ldc #20; //String finally 11 10: astore_0 12 11: aload...
下面是一个try语句嵌套的例子。 1classMultiNest{2staticvoidprocedure(){3try{4inta=0;5intb=42/a;6}catch(java.lang.ArithmeticExceptione){7System.out.println("in procedure, catch ArithmeticException: "+e);8}9}10publicstaticvoidmain(Stringargs[]){11try{12procedure();13}catch(java.lang.Exceptio...
1:invokespecial#1; //Method java/lang/Object."":()V 4: return LineNumberTable: line 1: 0 public static void main(java.lang.String[]); Code: 0: getstatic #2; //Field java/lang/System.out:Ljava/io/PrintStream; 3: new #3; //class java/lang/StringBuilder 6: dup 7: invokespecial #4...
Java try、catch 和finally块有助于编写可能在运行时抛出异常的应用程序代码,并让我们有机会通过执行备用应用程序逻辑从异常中恢复或优雅地处理异常以向用户报告。它有助于防止难看的应用程序崩溃。 请注意,建议每次可以使用时都使用try-with-resources块。 1. 基础知识
try {// some code that may throw an exception} catch (Exception e) {// handle the exception} finally {// code in this block will always be executed// e.g., close resources, cleanup, etc.} finalize: finalize是一个方法,属于Object类中的一个方法。它在对象被垃圾回收之前被调用,允许对象在...
Main.java:8: error: cannot assign a value to final variable age age = 55; ^ 1 error Explanation: In the above code, we have declared a final variable named “age” and assigned it a value of 18. When we try to update the value of this variable to 55. It will show a Compile Ti...
Code: 0: sipush 999 3: istore_0 。。。 29: getstatic #2 // Field java/lang/System.out:Ljava/io/PrintStream; 32: ldc #14 // String catch block 34: invokevirtual #10 // Method java/io/PrintStream.println:(Ljava/lang/String;)V ...
The finally block in Java is a crucial part of exception handling. It is used to execute important code such as closing resources, regardless of whether an exception is thrown or not. The finally block always executes when the try block exits, ensuring that cleanup code runs. Usage The final...
in main,catchException: java.lang.ArithmeticException: / by zero 3.2 try-catch程序块的执行流程以及执行结果 相对于try-catch-finally程序块而言,try-catch的执行流程以及执行结果还是比较简单的。 首先执行的是try语句块中的语句,这时可能会有以下三种情况: ...