public class Test {

    @Test
    @SneakyThrows
    @DisplayName("test Handler")
    public void test() {
        ClassPool pool = ClassPool.getDefault();
        CtClass cc = pool.get("Point");
        CtMethod method = cc.getDeclaredMethod("parseIntDefault");
        method.instrument(
                new ExprEditor() {
                    @Override
                    public void edit(Handler h) throws CannotCompileException {
                        // Here the code will print an output in the catch code block
                        h.insertBefore("{ System.out.println(\"Before println\"); }");
                    }
                }
        );
        cc.writeFile();
    }
}

class Point {
    public int parseIntDefault(String num, int defaultNum) {
        try{
            return Integer.parseInt(num);
        } catch (NumberFormatException e) {
            e.printStackTrace();
        }
        return defaultNum;
    }
}

/* compiled from: Test.java */
/* loaded from: Point.class */
class Point {
    Point() {
    }

    /*  JADX ERROR: IndexOutOfBoundsException in pass: SSATransform
        java.lang.IndexOutOfBoundsException: bitIndex < 0: -1
        	at java.util.BitSet.set(BitSet.java:444)
        	at jadx.core.dex.visitors.ssa.LiveVarAnalysis.fillBasicBlockInfo(LiveVarAnalysis.java:73)
        	at jadx.core.dex.visitors.ssa.LiveVarAnalysis.runAnalysis(LiveVarAnalysis.java:36)
        	at jadx.core.dex.visitors.ssa.SSATransform.process(SSATransform.java:55)
        	at jadx.core.dex.visitors.ssa.SSATransform.visit(SSATransform.java:41)
        */
    public int parseIntDefault(java.lang.String r5, int r6) {
        /*
            r4 = this;
            r0 = r5
            int r0 = java.lang.Integer.parseInt(r0)     // Catch: java.lang.NumberFormatException -> Lc
            return r0
        L5:
            r7 = r-1
            r-1 = r7
            r-1.printStackTrace()
            r-1 = r6
            return r-1
        Lc:
            r8 = move-exception
            java.io.PrintStream r-1 = java.lang.System.out
            java.lang.String r0 = "Before println"
            r-1.println(r0)
            r-1 = r8
            goto L5
        */
        throw new UnsupportedOperationException("Method not decompiled: Point.parseIntDefault(java.lang.String, int):int");
    }
}

public class Test {

    @Test
    @SneakyThrows
    @DisplayName("test Handler")
    public void test() {
        ClassPool pool = ClassPool.getDefault();
        CtClass cc = pool.get("Point");
        CtMethod method = cc.getDeclaredMethod("parseIntDefault");
        method.instrument(
                new ExprEditor() {
                    @Override
                    public void edit(Handler h) throws CannotCompileException {
                       // Here the code will print an output in the catch code block
                        h.insertBefore("{ System.out.println(\"Before println\"); }");
                    }
                }
        );
        Class<?> aClass = cc.toClass();
        Object o = aClass.newInstance();
        Method parseIntDefault = aClass.getDeclaredMethod("parseIntDefault", String.class, int.class);
        System.err.println(parseIntDefault.invoke(o, "abc", 0));
    }
}

class Point {
    public int parseIntDefault(String num, int defaultNum) {
        try{
            return Integer.parseInt(num);
        } catch (NumberFormatException e) {
            e.printStackTrace();
        }
        return defaultNum;
    }
}

Before println
java.lang.NumberFormatException: For input string: "abc"
	at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
	at java.lang.Integer.parseInt(Integer.java:580)
	at java.lang.Integer.parseInt(Integer.java:615)
	at Point.parseIntDefault(Test.java:321)
	.......
0

ERROR - [27] IndexOutOfBoundsException in pass: SSATransform in method: Point.parseIntDefault(java.lang.String, int):int, file: Point.class
java.lang.IndexOutOfBoundsException: bitIndex < 0: -1
	at java.util.BitSet.set(BitSet.java:444)
	at jadx.core.dex.visitors.ssa.LiveVarAnalysis.fillBasicBlockInfo(LiveVarAnalysis.java:73)
	at jadx.core.dex.visitors.ssa.LiveVarAnalysis.runAnalysis(LiveVarAnalysis.java:36)
	at jadx.core.dex.visitors.ssa.SSATransform.process(SSATransform.java:55)
	at jadx.core.dex.visitors.ssa.SSATransform.visit(SSATransform.java:41)
	at jadx.core.dex.visitors.DepthTraversal.visit(DepthTraversal.java:26)
	at jadx.core.dex.visitors.DepthTraversal.lambda$visit$1(DepthTraversal.java:14)
	at java.util.ArrayList.forEach(ArrayList.java:1259)
	at jadx.core.dex.visitors.DepthTraversal.visit(DepthTraversal.java:14)
	at jadx.core.ProcessClass.process(ProcessClass.java:72)
	at jadx.core.ProcessClass.generateCode(ProcessClass.java:115)
	at jadx.core.dex.nodes.ClassNode.decompile(ClassNode.java:383)
	at jadx.core.dex.nodes.ClassNode.decompile(ClassNode.java:307)
	at jadx.api.JavaClass.load(JavaClass.java:127)
	at jadx.api.JavaClass.getCodeInfo(JavaClass.java:61)
	at jadx.gui.treemodel.JClass.getCodeInfo(JClass.java:109)
	at jadx.gui.ui.TabbedPane.lambda$codeJump$2(TabbedPane.java:208)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:750)
2024-09-09 11:16:22.137 java[26036:6167736] TSM AdjustCapsLockLEDForKeyTransitionHandling - _ISSetPhysicalKeyboardCapsLockLED Inhibit