jsr_w

.version 49 0
.source Example.java
.class super public Example
.super java/lang/Object

.method public <init> : ()V
    .limit stack 1
    .limit locals 1

    aload_0
    invokespecial java/lang/Object <init> ()V
    return
.end method

.method static public main : ([Ljava/lang/String;)V
    .limit stack 2
    .limit locals 1
    goto first
    second:
        pop
        getstatic java/lang/System out Ljava/io/PrintStream;
        ldc 'Hello world'
        invokevirtual java/io/PrintStream println (Ljava/lang/String;)V
        goto third
    first:
        jsr_w second
    third:
        return
.end method

jsr_w is the wide version of jsr, an instruction which places a return location on the stack and jumps. The intended use of this instruction is, in combination with ret, to allow the use of subroutines. In this instance, I simply discard the return value, making its functionality practically identical to goto_w, although in this instance, decompilers may be looking for a ret which doesn't exist.

~~CFR 0.103~~

/*
 * Decompiled with CFR 0_103.
 */
public class Example {
    public static void main(String[] arrstring) {
        Object v0 = null;
    }
}

This was fixed in 0.105. Apparently I'm also credited in the changelog. <3

Procyon 0.5.30

// 
// Decompiled by Procyon v0.5.30
// 

public class Example
{
    public static void main(final String[] p0) {
        // 
        // This method could not be decompiled.
        // 
        // Could not show original bytecode, likely due to the same error.
        // 
        // The error that occurred was:
        // 
        // com.strobel.assembler.metadata.MethodBodyParseException: An error occurred while parsing the bytecode of method 'Example.main:([Ljava/lang/String;)V'.
        //     at com.strobel.assembler.metadata.MethodReader.readBody(MethodReader.java:65)
        //     at com.strobel.assembler.metadata.MethodDefinition.tryLoadBody(MethodDefinition.java:722)
        //     at com.strobel.assembler.metadata.MethodDefinition.getBody(MethodDefinition.java:83)
        //     at com.strobel.decompiler.languages.java.ast.AstMethodBodyBuilder.createMethodBody(AstMethodBodyBuilder.java:202)
        //     at com.strobel.decompiler.languages.java.ast.AstMethodBodyBuilder.createMethodBody(AstMethodBodyBuilder.java:99)
        //     at com.strobel.decompiler.languages.java.ast.AstBuilder.createMethodBody(AstBuilder.java:757)
        //     at com.strobel.decompiler.languages.java.ast.AstBuilder.createMethod(AstBuilder.java:655)
        //     at com.strobel.decompiler.languages.java.ast.AstBuilder.addTypeMembers(AstBuilder.java:532)
        //     at com.strobel.decompiler.languages.java.ast.AstBuilder.createTypeCore(AstBuilder.java:499)
        //     at com.strobel.decompiler.languages.java.ast.AstBuilder.createTypeNoCache(AstBuilder.java:141)
        //     at com.strobel.decompiler.languages.java.ast.AstBuilder.createType(AstBuilder.java:130)
        //     at com.strobel.decompiler.languages.java.ast.AstBuilder.addType(AstBuilder.java:105)
        //     at com.strobel.decompiler.languages.java.JavaLanguage.buildAst(JavaLanguage.java:71)
        //     at com.strobel.decompiler.languages.java.JavaLanguage.decompileType(JavaLanguage.java:59)
        //     at com.strobel.decompiler.DecompilerDriver.decompileType(DecompilerDriver.java:317)
        //     at com.strobel.decompiler.DecompilerDriver.main(DecompilerDriver.java:141)
        // Caused by: java.lang.NullPointerException
        //     at com.strobel.assembler.metadata.MethodReader.readBodyCore(MethodReader.java:170)
        //     at com.strobel.assembler.metadata.MethodReader.readBody(MethodReader.java:62)
        //     ... 15 more
        // 
        throw new IllegalStateException("An error occurred while decompiling this method.");
    }
}

Mike has fixed this. The next release should not have this issue

JD-GUI 1.4.0

public class Example
{
  /* Error */
  public static void main(String[] arg0)
  {
    // Byte code:
    //   0: goto +15 -> 15
    //   3: pop
    //   4: getstatic 17    java/lang/System:out    Ljava/io/PrintStream;
    //   7: ldc 1
    //   9: invokevirtual 23    java/io/PrintStream:println (Ljava/lang/String;)V
    //   12: goto +8 -> 20
    //   15: jsr_w -1 -1 -1 -12
    //   20: return
  }
}

This may be fixed in a future release.

Fernflower @810818e

public class Example {
   public static void main(String[] var0) {
      System.out.println("Hello world");
   }
}