case OpCode.DMUL:            explanationLabel.setLabelText(StringTable.dmulText);            break;        case OpCode.DSTORE:            explanationLabel.setLabelText(StringTable.dstoreText);            break;        case OpCode.DSTORE_0:            explanationLabel.setLabelText(StringTable.dstore_0Text);            break;        case OpCode.DSTORE_2:            explanationLabel.setLabelText(StringTable.dstore_2Text);            break;        case OpCode.DSUB:            explanationLabel.setLabelText(StringTable.dsubText);            break;        case OpCode.FCONST_0:            explanationLabel.setLabelText(StringTable.fconst_0Text);            break;        case OpCode.FCONST_2:            explanationLabel.setLabelText(StringTable.fconst_2Text);            break;        case OpCode.FLOAD_0:            explanationLabel.setLabelText(StringTable.fload_0Text);            break;        case OpCode.FMUL:            explanationLabel.setLabelText(StringTable.fmulText);            break;        case OpCode.FSTORE_0:            explanationLabel.setLabelText(StringTable.fstore_0Text);            break;        case OpCode.FSUB:            explanationLabel.setLabelText(StringTable.fsubText);            break;        case OpCode.GETSTATIC:            explanationLabel.setLabelText(StringTable.getstaticText);            break;        case OpCode.GOTO:            explanationLabel.setLabelText(StringTable.gotoText);            break;        case OpCode.IADD:            explanationLabel.setLabelText(StringTable.iaddText);            break;        case OpCode.IAND:            explanationLabel.setLabelText(StringTable.iandText);            break;        case OpCode.IASTORE:            explanationLabel.setLabelText(StringTable.iastoreText);            break;        case OpCode.ICONST_M1:            explanationLabel.setLabelText(StringTable.iconst_m1Text);            break;        case OpCode.ICONST_0:            explanationLabel.setLabelText(StringTable.iconst_0Text);            break;        case OpCode.ICONST_1:            explanationLabel.setLabelText(StringTable.iconst_1Text);            break;        case OpCode.ICONST_2:            explanationLabel.setLabelText(StringTable.iconst_2Text);            break;        case OpCode.ICONST_3:            explanationLabel.setLabelText(StringTable.iconst_3Text);            break;        case OpCode.ICONST_4:            explanationLabel.setLabelText(StringTable.iconst_4Text);            break;        case OpCode.ICONST_5:            explanationLabel.setLabelText(StringTable.iconst_5Text);            break;        case OpCode.IF_ICMPGT:            explanationLabel.setLabelText(StringTable.if_icmpgtText);            break;        case OpCode.IF_ICMPLT:            explanationLabel.setLabelText(StringTable.if_icmpltText);            break;        case OpCode.IF_ICMPNE:            explanationLabel.setLabelText(StringTable.if_icmpneText);            break;        case OpCode.IDIV:            explanationLabel.setLabelText(StringTable.idivText);            break;        case OpCode.IFEQ:            explanationLabel.setLabelText(StringTable.ifeqText);            break;        case OpCode.IFLT:            explanationLabel.setLabelText(StringTable.ifltText);            break;        case OpCode.IFNE:            explanationLabel.setLabelText(StringTable.ifneText);            break;        case OpCode.IINC:            explanationLabel.setLabelText(StringTable.iincText);            break;        case OpCode.ILOAD_0:            explanationLabel.setLabelText(StringTable.iload_0Text);            break;        case OpCode.ILOAD_1:            explanationLabel.setLabelText(StringTable.iload_1Text);            break;        case OpCode.ILOAD_2:            explanationLabel.setLabelText(StringTable.iload_2Text);            break;        case OpCode.ILOAD_3:            explanationLabel.setLabelText(StringTable.iload_3Text);            break;        case OpCode.IMUL:            explanationLabel.setLabelText(StringTable.imulText);            break;        case OpCode.I2B:            explanationLabel.setLabelText(StringTable.i2bText);            break;        case OpCode.INVOKESTATIC:            explanationLabel.setLabelText(StringTable.invokestaticText);            break;        case OpCode.IOR:            explanationLabel.setLabelText(StringTable.iorText);            break;        case OpCode.IREM:            explanationLabel.setLabelText(StringTable.iremText);            break;        case OpCode.ISHL:            explanationLabel.setLabelText(StringTable.ishlText);            break;        case OpCode.ISTORE:            explanationLabel.setLabelText(StringTable.istoreText);            break;        case OpCode.ISTORE_0:            explanationLabel.setLabelText(StringTable.istore_0Text);            break;        case OpCode.ISTORE_1:            explanationLabel.setLabelText(StringTable.istore_1Text);            break;        case OpCode.ISTORE_2:            explanationLabel.setLabelText(StringTable.istore_2Text);            break;        case OpCode.ISTORE_3:            explanationLabel.setLabelText(StringTable.istore_3Text);            break;        case OpCode.IXOR:            explanationLabel.setLabelText(StringTable.ixorText);            break;        case OpCode.JSR:            explanationLabel.setLabelText(StringTable.jsrText);            break;        case OpCode.LADD:            explanationLabel.setLabelText(StringTable.laddText);            break;        case OpCode.LCONST_1:            explanationLabel.setLabelText(StringTable.lconst_1Text);            break;        case OpCode.LDC2_W:            explanationLabel.setLabelText(StringTable.ldc2_wText);            break;        case OpCode.LLOAD:            explanationLabel.setLabelText(StringTable.lloadText);            break;        case OpCode.LLOAD_0:            explanationLabel.setLabelText(StringTable.lload_0Text);            break;        case OpCode.LLOAD_2:            explanationLabel.setLabelText(StringTable.lload_2Text);            break;        case OpCode.LSTORE:            explanationLabel.setLabelText(StringTable.lstoreText);            break;        case OpCode.LSTORE_0:            explanationLabel.setLabelText(StringTable.lstore_0Text);            break;        case OpCode.LSTORE_2:            explanationLabel.setLabelText(StringTable.lstore_2Text);            break;        case OpCode.MULTIANEWARRAY:            explanationLabel.setLabelText(StringTable.multianewarrayText);            break;        case OpCode.POP:            explanationLabel.setLabelText(StringTable.popText);            break;        case OpCode.RET:            explanationLabel.setLabelText(StringTable.retText);            break;        case OpCode.TABLESWITCH:            explanationLabel.setLabelText(StringTable.tableswitchText);            break;        default:            explanationLabel.setLabelText("");            break;        }    }    // Make pretty border around entire applet panel    public Insets insets() {        return new Insets(5, 5, 5, 5);    }    public boolean action(Event evt, Object arg) {        if (evt.target instanceof Button) {            String bname = (String) arg;            if (bname.equals(StringTable.reset)) {                stopButton.disable();                runButton.enable();                stepButton.enable();                resetButton.disable();                resetState();                updateStateDisplay();            }            else if (bname.equals(StringTable.step)) {                resetButton.enable();                try {                    pcRegister = currentMethod.executeNextInstruction();                }                catch (BreakpointException be) {                    // Ignore this. User can reset.                }                updateStateDisplay();            }            else if (bname.equals(StringTable.run)) {                stopButton.enable();                runButton.disable();                stepButton.disable();                resetButton.disable();                if (runner == null) {                    runner = new Thread(this);                    runner.start();                }            }            else if (bname.equals(StringTable.stop)) {                runButton.enable();                stepButton.enable();                resetButton.enable();                stopButton.disable();                if (runner != null) {                    // Synchronize on currentMethod to allow the thread                    // to complete execution of the current instruction before                    // killing it.                    synchronized (currentMethod) {                        runner.stop();                    }                    runner = null;                }            }        }        return true;    }    public abstract int[] getTheProgram();    public abstract String[] getBytecodeMnemonics();    public abstract int getBytecodeViewSize();    public abstract int getMaxStack();    public abstract int getMaxLocals();    public abstract Color getMethodAreaColor();    public abstract Color getStackAreaColor();    public abstract Color getExplanationLabelColor();    public abstract Color getTitleColor();    public abstract Color getAppletBackgroundColor();    public abstract String getAppletTitle();	// Some methods don't have an exception table. They can	// use this default implementation of getExceptionTable    public ExceptionTableEntry[] getExceptionTable() {        return null;    }	// All methods have a constant pool, but not all simulations	// use it. Those that don't use a constant pool can	// use this default implementation of getConstantPool    public ConstantPoolEntry[] getConstantPool() {        return null;    }}