Each language port of Diff Match Patch uses the same API. These are the language-specific notes regarding Java.
Before starting, go to the java directory, and create an empty sub-directory called classes.
Here's a minimal example of a diff in Java:
import java.util.LinkedList;
import name.fraser.neil.plaintext.diff_match_patch;
public class hello {
public static void main(String args[]) {
diff_match_patch dmp = new diff_match_patch();
LinkedList<diff_match_patch.Diff> diff = dmp.diff_main("Hello World.", "Goodbye World.");
// Result: [(-1, "Hell"), (1, "G"), (0, "o"), (1, "odbye"), (0, " World.")]
dmp.diff_cleanupSemantic(diff);
// Result: [(-1, "Hello"), (1, "Goodbye"), (0, " World.")]
System.out.println(diff);
}
}
Go to the java/src directory and save the above program as hello.java. Then go to the java directory and execute these two commands:
javac -d classes src/name/fraser/neil/plaintext/diff_match_patch.java src/hello.java
java -classpath classes hello
Unit tests can be performed from the java directory by executing two commands:
javac -d classes src/name/fraser/neil/plaintext/diff_match_patch.java tests/name/fraser/neil/plaintext/diff_match_patch_test.java
java -classpath classes name/fraser/neil/plaintext/diff_match_patch_test
All tests should pass.
Speed test for diff can be performed from the java directory by executing two commands:
javac -d classes src/name/fraser/neil/plaintext/diff_match_patch.java tests/name/fraser/neil/plaintext/Speedtest.java
java -classpath classes name/fraser/neil/plaintext/Speedtest
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