4,5d3 < java.lang.String field2; < public class Class3 extends java.lang.Object{ java.lang.String field1; java.lang.String field2; public Class3(); Code: 0:.aload_0 1:.invokespecial.#1; //Method java/lang/Object."<init>":()V 4:.return void method1(); Code: 0:.return } public class Class3 extends java.lang.Object{ java.lang.String field1; public Class3(); Code: 0:.aload_0 1:.invokespecial.#1; //Method java/lang/Object."<init>":()V 4:.return void method1(); Code: 0:.return } 5d4 < String field2; public class Class3 { //class 3 has extra field for jar 1 void method1(){} String field1; String field2; } public class Class3 { //class 3 has extra field for jar 1 void method1(){} String field1; } 11a12,15 > void method2(); > Code: > 0:.return > public class Class2 extends java.lang.Object{ public Class2(); Code: 0:.aload_0 1:.invokespecial.#1; //Method java/lang/Object."<init>":()V 4:.return void method1(); Code: 0:.return } public class Class2 extends java.lang.Object{ public Class2(); Code: 0:.aload_0 1:.invokespecial.#1; //Method java/lang/Object."<init>":()V 4:.return void method1(); Code: 0:.return void method2(); Code: 0:.return } 5d4 < System.err.println(s); public class Class4 { //class 4 differs in method1 code void method1(){ String s=""; System.err.println(s); } } public class Class4 { //class 4 differs in method1 code void method1(){ String s=""; } } 12,15c12 < 3:.getstatic.#3; //Field java/lang/System.err:Ljava/io/PrintStream; < 6:.aload_1 < 7:.invokevirtual.#4; //Method java/io/PrintStream.println:(Ljava/lang/String;)V < 10:.return --- > 3:.return public class Class4 extends java.lang.Object{ public Class4(); Code: 0:.aload_0 1:.invokespecial.#1; //Method java/lang/Object."<init>":()V 4:.return void method1(); Code: 0:.ldc.#2; //String 2:.astore_1 3:.getstatic.#3; //Field java/lang/System.err:Ljava/io/PrintStream; 6:.aload_1 7:.invokevirtual.#4; //Method java/io/PrintStream.println:(Ljava/lang/String;)V 10:.return } public class Class4 extends java.lang.Object{ public Class4(); Code: 0:.aload_0 1:.invokespecial.#1; //Method java/lang/Object."<init>":()V 4:.return void method1(); Code: 0:.ldc.#2; //String 2:.astore_1 3:.return } noyes 3a4 > void method2(){} public class Class2 { //class 2 has extra method for jar 2 void method1(){} } public class Class2 { //class 2 has extra method for jar 2 void method1(){} void method2(){} } noyes 8 JarCompare is free for personal use and requires a license for corporate use We also make FaultFactory tool (simulates Socket/HTTP faults in your app) Please visit http://www.extradata.com/products/ E-mail feedback to jarc@extradata.com