GitSharp/Non Trivial Java To CSharp Conversions

From eqqon

This page lists some commonly required analogues between Java and C# that are not so trivial. This collection has been compiled while porting GitSharp.

Contents 1 Unsigned right shift operator (>>>) 2 string.Substring 3 Octal literals (i.e. 0001) 4 synchronized 5 Streams and Buffers 6 Integer.parseInt( string s, int radix)

Unsigned right shift operator (>>>)

Java:

int a, b; int i = (a + b) >>> 5;

C#:

int a, b; int i = (int)(((uint)(a + b)) >> 5)

string.Substring

Java:

someString.substring(int, int)

An extension method that resembles the Java version is available in GitSharp.Util:

C#:

someString.Slice(int, int)

Octal literals (i.e. 0001)

C# does not support octal literals (starting with a leading zero in java) and interprets them wrongly as decimal. You need to replace them by the corresponding decimal or hex literals.

Java:

int i = 0100644;

C#

int i = 33188;

synchronized

Java:

synchronized void a_method() { ...

}

C#

[MethodImpl(MethodImplOptions.Synchronized)] public void a_method() { ...

}

When inlined, synchronized(this) is of course equivalent to lock(this)

Streams and Buffers

Java

new ByteArrayOutputStream();

C#

new BinaryWriter(new MemoryStream());

Integer.parseInt( string s, int radix)

This parses a string s using the base radix and converts it to decimal.

Java

Integer.parseInt( "FF", 16)

C#

NB.BaseToDecimal("FF", 16)

Note, NB is a class in the namespace GitSharp.Util.