Interesting try finally trick

The result returned is not the one you expected?

Code

public static void main(String... args) {
	System.out.println(foo());	
}
  
static int foo() {
   int result = 1;
   try {
       return result;
   } finally {
       result++;
   }
}

Result

Console

1

Bytecode

Compiled from "RunnContainer.java"
public class io.jpad.scratch.RunnContainer {
  public io.jpad.scratch.RunnContainer();
    Code:
       0: aload_0
       1: invokespecial #1                  // Method java/lang/Object."<init>":()V
       4: return

  public static void main(java.lang.String...);
    Code:
       0: getstatic     #2                  // Field java/lang/System.out:Ljava/io/PrintStream;
       3: invokestatic  #3                  // Method foo:()I
       6: invokevirtual #4                  // Method java/io/PrintStream.println:(I)V
       9: return

  static int foo();
    Code:
       0: iconst_1
       1: istore_0
       2: iload_0
       3: istore_1
       4: iinc          0, 1
       7: iload_1
       8: ireturn
       9: astore_2
      10: iinc          0, 1
      13: aload_2
      14: athrow
    Exception table:
       from    to  target type
           2     4     9   any
}

Jpad Version:1.06

viewCount:3524

Creator: admin

Latest Editor: admin

Interesting try finally trick

Code

Result

Console

Bytecode

Tags