gistfile1.txt

import java.io.IOException;

public class MultiCatch {
    public static void main(String... args) {
        try {
            if (args.length == 1) {
                throw new IOException("!!");
            }
            if (args.length == 2) {
                throw new ClassNotFoundException("??");
            }
        } catch (IOException|ClassNotFoundException e) {
            System.out.println("ex: " + e.getClass());
        }

        System.out.println("Done.");
    }
}

-------------------------------------------------
$ javap -l -c MultiCatch
Compiled from "MultiCatch.java"
public class MultiCatch extends java.lang.Object {
  public MultiCatch();
    Code:
       0: aload_0       
       1: invokespecial #1                  // Method java/lang/Object."<init>":()V
       4: return        
    LineNumberTable:
      line 3: 0

  public static void main(java.lang.String...);
    Code:
       0: aload_0       
       1: arraylength   
       2: iconst_1      
       3: if_icmpne     16
       6: new           #2                  // class java/io/IOException
       9: dup           
      10: ldc           #3                  // String !!
      12: invokespecial #4                  // Method java/io/IOException."<init>":(Ljava/lang/String;)V
      15: athrow        
      16: aload_0       
      17: arraylength   
      18: iconst_2      
      19: if_icmpne     32
      22: new           #5                  // class java/lang/ClassNotFoundException
      25: dup           
      26: ldc           #6                  // String ??
      28: invokespecial #7                  // Method java/lang/ClassNotFoundException."<init>":(Ljava/lang/String;)V
      31: athrow        
      32: goto          64
      35: astore_1      
      36: getstatic     #8                  // Field java/lang/System.out:Ljava/io/PrintStream;
      39: new           #9                  // class java/lang/StringBuilder
      42: dup           
      43: invokespecial #10                 // Method java/lang/StringBuilder."<init>":()V
      46: ldc           #11                 // String ex: 
      48: invokevirtual #12                 // Method java/lang/StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
      51: aload_1       
      52: invokevirtual #13                 // Method java/lang/Object.getClass:()Ljava/lang/Class;
      55: invokevirtual #14                 // Method java/lang/StringBuilder.append:(Ljava/lang/Object;)Ljava/lang/StringBuilder;
      58: invokevirtual #15                 // Method java/lang/StringBuilder.toString:()Ljava/lang/String;
      61: invokevirtual #16                 // Method java/io/PrintStream.println:(Ljava/lang/String;)V
      64: getstatic     #8                  // Field java/lang/System.out:Ljava/io/PrintStream;
      67: ldc           #17                 // String Done.
      69: invokevirtual #16                 // Method java/io/PrintStream.println:(Ljava/lang/String;)V
      72: return        
    Exception table:
       from    to  target type
           0    32    35   Class java/io/IOException                    ★→これと
           0    32    35   Class java/lang/ClassNotFoundException       ★→こ。to, targetが同じ!!
    LineNumberTable:
      line 6: 0
      line 7: 6
      line 9: 16
      line 10: 22
      line 14: 32
      line 12: 35
      line 13: 36
      line 16: 64
      line 17: 72
}