java Programming Glossary: iconst_0

http://stackoverflow.com/questions/1006395/fastest-way-to-iterate-in-java

0 aload_0 1 astore_1 2 aload_1 3 arraylength 4 istore_2 5 iconst_0 6 istore_3 7 iload_3 8 iload_2 9 if_icmpge 31 12 aload_1 13.. to public static void main java.lang.String Code 0 iconst_0 1 istore_1 2 iload_1 3 aload_0 4 arraylength 5 if_icmpge 23..

Java OutOfMemoryError strange behaviour

http://stackoverflow.com/questions/13531004/java-outofmemoryerror-strange-behaviour

code without the sum variable static void test int Code 0 iconst_0 1 istore_1 2 goto 12 5 iload_0 6 newarray long 8 astore_2 9.. 3 ldc #16 int 5000000 5 newarray long 7 astore_2 8 iconst_0 9 newarray long 11 astore_2 12 ldc #16 int 5000000 14 newarray..

Comparing strings with == which are declared final in Java

http://stackoverflow.com/questions/19418427/comparing-strings-with-which-are-declared-final-in-java

#9 String string 31 if_acmpne 38 34 iconst_1 35 goto 39 38 iconst_0 39 invokevirtual #10 Method java io PrintStream.println Z V.. #2 String string 9 if_acmpne 16 12 iconst_1 13 goto 17 16 iconst_0 17 invokevirtual #4 Method java io PrintStream.println Z V 20..

Is 1/0 a legal Java expression?

http://stackoverflow.com/questions/2934063/is-1-0-a-legal-java-expression

Code 0 iconst_5 1 istore_1 i 5 2 iconst_1 3 iconst_0 4 idiv 5 istore_2 j 1 0 6 iconst_4 7 istore_3 k 4 8 return As..

Which is more effective: if (null == variable) or if (variable == null)?

http://stackoverflow.com/questions/3021195/which-is-more-effective-if-null-variable-or-if-variable-null

11 check if it's null 7 iconst_1 push 1 8 goto 12 11 iconst_0 push 0 12 istore_2 store For boolean b null variable 3 aconst_null.. 12 check if equal 8 iconst_1 push 1 9 goto 13 12 iconst_0 push 0 13 istore_2 store As @Bozho says variable null is the..

Is this valid Java?

http://stackoverflow.com/questions/3110014/is-this-valid-java

static java.lang.String f java.util.List Code 0 aload_0 1 iconst_0 2 invokeinterface #2 2 InterfaceMethod java util List.get I.. static java.lang.Integer f java.util.List Code 0 aload_0 1 iconst_0 2 invokeinterface #2 2 InterfaceMethod java util List.get I.. 0 iconst_1 1 anewarray #3 class java lang String 4 dup 5 iconst_0 6 ldc #5 String asdf 8 aastore 9 invokestatic #6 Method java..

Why does this go into an infinite loop?

http://stackoverflow.com/questions/3831341/why-does-this-go-into-an-infinite-loop

main java.lang.String throws java.lang.Exception Code 0 iconst_0 1 istore_1 2 iload_1 3 iconst_3 4 if_icmpge 22 7 iload_1 8 iinc..

Loop counter in Java API

http://stackoverflow.com/questions/4181941/loop-counter-in-java-api

9 ifge 5 if i 0 goto 5 2nd for loop increment 0 2 12 iconst_0 13 istore_1 i 0 14 goto 20 17 inc 1 1 i 1 20 iload_1 21 iconst..

Why are compiled Java class files smaller than C compiled files?

http://stackoverflow.com/questions/4838221/why-are-compiled-java-class-files-smaller-than-c-compiled-files

hi 10000 hi hi lo lo hi lo print lo then its bytecode is 0 iconst_0 1 istore_0 lo 0 2 iconst_1 3 istore_1 hi 1 4 iload_1 5 sipush..

for loop optimization

http://stackoverflow.com/questions/6093537/for-loop-optimization

#3 Method java util ArrayList. init V 7 astore_1 8 iconst_0 9 istore_2 10 iload_2 11 aload_1 12 invokeinterface #4 1 InterfaceMethod.. #4 1 InterfaceMethod java util List.size I 14 istore_2 15 iconst_0 16 istore_3 17 iload_3 18 iload_2 19 if_icmpge 36 22 getstatic..

Accessing Java static final ivar value through reflection

http://stackoverflow.com/questions/850148/accessing-java-static-final-ivar-value-through-reflection

Field 16 astore 4 18 aload 4 20 arraylength 21 istore 5 23 iconst_0 24 istore 6 26 iload 6 28 iload 5 30 if_icmpge 90 33 aload 4..